[b939736] | 1 | // polynomial.cpp |
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| 2 | |
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| 3 | #define _CRT_SECURE_NO_WARNINGS |
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| 4 | |
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| 5 | #include "polynomial.h" |
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| 6 | #include <array> |
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| 7 | #include <map> |
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| 8 | #include <cstdio> |
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| 9 | |
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| 10 | using namespace pol; |
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| 11 | |
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| 12 | u61_t::u61_t(u64_t x): |
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| 13 | data(x % MOD) { |
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| 14 | } |
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| 15 | inline u61_t::operator pol::u64_t() const { |
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| 16 | return data; |
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| 17 | } |
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| 18 | inline u61_t u61_t::operator+(const u61_t &x) const { |
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| 19 | return (data + x.data) % MOD; |
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| 20 | } |
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| 21 | inline u61_t u61_t::operator-(const u61_t &x) const { |
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| 22 | return (data + MOD - x.data) % MOD; |
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| 23 | } |
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| 24 | u61_t u61_t::operator*(const u61_t &x) const { |
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| 25 | //#pragma warning(push) |
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| 26 | //#pragma warning(disable:4127) |
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| 27 | if (BUFSIZE > 4) { |
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| 28 | //#pragma warning(pop) |
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| 29 | u64_t h1 = data >> 32, h2 = x.data >> 32, l1 = data & M32, l2 = x.data & M32; |
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| 30 | u64_t bot = l1 * l2; |
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| 31 | u64_t mid = h1 * l2 + h2 * l1 + (bot >> 32); |
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| 32 | bot = (mid << 32) + (bot & M32); |
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| 33 | u64_t top = ((h1 * h2 + (mid >> 32)) << (64 - MODSIZE)) + (bot >> MODSIZE); |
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| 34 | return (top + (bot & MOD)) % MOD; |
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| 35 | } else { |
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| 36 | return data * x.data % MOD; |
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| 37 | } |
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| 38 | } |
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| 39 | u61_t u61_t::operator/(const u61_t &x) const { |
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| 40 | return *this * (x.inverse()); |
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| 41 | } |
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| 42 | u61_t u61_t::inverse() const { |
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| 43 | if (!data) { |
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| 44 | throw "Invalid inverse\n"; |
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| 45 | } |
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| 46 | u64_t a = MOD, b = data, r; |
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| 47 | std::array<u64_t, 64> q; |
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| 48 | q[0] = 1; |
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| 49 | u32_t i = 0; |
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| 50 | do { |
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| 51 | ++i; |
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| 52 | r = a % b; |
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| 53 | q[i] = a / b; |
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| 54 | a = b; b = r; |
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| 55 | } while (r); |
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| 56 | for (u32_t j = 2; j < i; ++j) { |
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| 57 | q[j] = q[j] * q[j - 1] + q[j - 2]; |
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| 58 | } |
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| 59 | |
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| 60 | if (i & 1) { |
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| 61 | return u61_t(q[i - 1]); |
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| 62 | } else { |
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| 63 | return u61_t(MOD - q[i - 1]); |
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| 64 | } |
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| 65 | } |
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| 66 | u61_t& u61_t::operator+=(const u61_t &x) { |
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| 67 | return *this = *this + x; |
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| 68 | } |
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| 69 | u61_t& u61_t::operator-=(const u61_t &x) { |
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| 70 | return *this = *this - x; |
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| 71 | } |
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| 72 | u61_t& u61_t::operator*=(const u61_t &x) { |
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| 73 | return *this = *this * x; |
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| 74 | } |
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| 75 | u61_t& u61_t::operator/=(const u61_t &x) { |
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| 76 | return *this = *this / x; |
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| 77 | } |
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| 78 | inline u64_t* u61_t::get_addr() { |
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| 79 | return &data; |
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| 80 | } |
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| 81 | inline const u64_t* u61_t::get_addr() const { |
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| 82 | return &data; |
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| 83 | } |
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| 84 | inline u64_t& u61_t::get_buf() { |
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| 85 | return data; |
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| 86 | } |
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| 87 | inline const u64_t& u61_t::get_buf() const { |
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| 88 | return data; |
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| 89 | } |
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| 90 | void u61_t::print(FILE *fout, u32_t i) const { |
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| 91 | if ((i > 0 && data != 1) || !i) { |
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| 92 | fprintf(fout, "%llu", data); |
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| 93 | } |
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| 94 | if (i > 1) { |
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| 95 | fprintf(fout, "t<sup>%u</sup>", i); |
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| 96 | } else if (i == 1) { |
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| 97 | fprintf(fout, "t"); |
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| 98 | } |
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| 99 | } |
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| 100 | u61_t u61_t::pow(u32_t p) const { |
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| 101 | u61_t res, tmp = *this; |
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| 102 | res = 1; |
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| 103 | while (p > 0) { |
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| 104 | if (p & 1) { |
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| 105 | res *= tmp; |
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| 106 | } |
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| 107 | p /= 2; |
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| 108 | tmp *= tmp; |
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| 109 | } |
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| 110 | return res; |
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| 111 | } |
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| 112 | |
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| 113 | pol_t::pol_t(): |
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| 114 | data(1), |
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| 115 | degree(0) |
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| 116 | { |
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| 117 | data[0] = 0; |
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| 118 | } |
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| 119 | void pol_t::change_degree(u32_t ndegree) { |
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| 120 | degree = ndegree; |
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| 121 | data.resize(degree + 1); |
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| 122 | for (u32_t i = 0; i <= degree; ++i) { |
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| 123 | data[i] = 0; |
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| 124 | } |
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| 125 | } |
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| 126 | pol_t& pol_t::operator=(const pol_t &x) { |
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| 127 | if (&x != this) { |
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| 128 | change_degree(x.degree); |
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| 129 | for (u32_t i = 0; i <= degree; ++i) { |
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| 130 | data[i] = x[i]; |
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| 131 | } |
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| 132 | } |
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| 133 | return *this; |
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| 134 | } |
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| 135 | u61_t& pol_t::operator[](u32_t i) { |
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| 136 | if (i > degree) { |
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| 137 | throw "Out of array bound"; |
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| 138 | } |
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| 139 | return data[i]; |
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| 140 | } |
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| 141 | const u61_t& pol_t::operator[](u32_t i) const { |
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| 142 | if (i > degree) { |
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| 143 | throw "Out of array bound"; |
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| 144 | } |
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| 145 | return data[i]; |
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| 146 | } |
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| 147 | u64_t& pol_t::operator()(u32_t i) { |
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| 148 | if (i > degree) { |
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| 149 | throw "Out of array bound"; |
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| 150 | } |
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| 151 | return data[i].get_buf(); |
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| 152 | } |
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| 153 | const u64_t& pol_t::operator()(u32_t i) const { |
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| 154 | if (i > degree) { |
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| 155 | throw "Out of array bound"; |
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| 156 | } |
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| 157 | return data[i].get_buf(); |
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| 158 | } |
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| 159 | inline u32_t pol_t::get_deg() const { |
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| 160 | return degree; |
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| 161 | } |
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| 162 | pol_t pol_t::operator+(const pol_t &x) const{ |
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| 163 | pol_t tmp; |
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| 164 | u32_t tempdeg; |
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| 165 | if (degree < x.degree) { |
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| 166 | tempdeg = x.degree; |
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| 167 | } else { |
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| 168 | tempdeg = degree; |
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| 169 | } |
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| 170 | tmp.change_degree(tempdeg); |
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| 171 | for (u32_t i = 0; i <= degree; ++i) { |
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| 172 | tmp[i] = data[i]; |
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| 173 | } |
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| 174 | for (u32_t i = 0; i <= x.degree; ++i) { |
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| 175 | tmp[i] += x[i]; |
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| 176 | } |
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| 177 | while (tmp.degree > 0 && !tmp[tmp.degree]) { |
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| 178 | --(tmp.degree); |
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| 179 | } |
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| 180 | return tmp; |
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| 181 | } |
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| 182 | pol_t pol_t::operator-(const pol_t &x) const { |
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| 183 | pol_t tmp; |
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| 184 | u32_t tempdeg; |
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| 185 | if (degree < x.degree) { |
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| 186 | tempdeg = x.degree; |
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| 187 | } else { |
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| 188 | tempdeg = degree; |
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| 189 | } |
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| 190 | tmp.change_degree(tempdeg); |
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| 191 | for (u32_t i = 0; i <= degree; ++i) { |
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| 192 | tmp[i] = data[i]; |
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| 193 | } |
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| 194 | for (u32_t i = 0; i <= x.degree; ++i) { |
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| 195 | tmp[i] -= x[i]; |
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| 196 | } |
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| 197 | while (tmp.degree > 0 && !tmp[tmp.degree]) { |
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| 198 | --(tmp.degree); |
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| 199 | } |
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| 200 | return tmp; |
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| 201 | } |
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| 202 | pol_t pol_t::operator*(const pol_t &x) const { |
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| 203 | pol_t tmp; |
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| 204 | tmp.change_degree(degree + x.degree); |
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| 205 | for (u32_t i = 0; i <= degree; ++i) { |
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| 206 | for (u32_t j = 0; j <= x.degree; ++j) { |
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| 207 | tmp[i + j] += data[i] * x[j]; |
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| 208 | } |
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| 209 | } |
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| 210 | while (tmp.degree > 0 && !tmp[tmp.degree]) { |
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| 211 | --tmp.degree; |
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| 212 | } |
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| 213 | return tmp; |
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| 214 | } |
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| 215 | pol_t pol_t::operator%(const pol_t &x) const { |
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| 216 | if (!x) { |
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| 217 | throw "Polinomial denominator = 0"; |
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| 218 | } |
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| 219 | pol_t tmp = *this; |
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| 220 | if (!x.degree) { |
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| 221 | return pol_t(); |
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| 222 | } else { |
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| 223 | u61_t inv = x[x.degree].inverse(); |
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| 224 | for (u32_t i = tmp.degree; i >= x.degree; --i) { |
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| 225 | u61_t q = tmp[i] * inv; |
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| 226 | for (u32_t j = 0; j <= x.degree; ++j) { |
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| 227 | tmp[i - j] -= x[x.degree - j] * q; |
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| 228 | } |
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| 229 | } |
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| 230 | while (tmp.degree > 0 && !tmp[tmp.degree]) { |
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| 231 | --tmp.degree; |
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| 232 | } |
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| 233 | return tmp; |
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| 234 | } |
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| 235 | } |
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| 236 | pol_t pol_t::operator/(const pol_t &x) const { |
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| 237 | if (!x) { |
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| 238 | throw "Polinomial devision by 0"; |
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| 239 | } else if (x.degree > degree) { |
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| 240 | return pol_t(); |
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| 241 | } else if (x.degree) { |
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| 242 | pol_t tmp = *this, res; |
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| 243 | res.change_degree(tmp.degree - x.degree); |
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| 244 | u61_t q = x[x.degree].inverse(); |
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| 245 | for (u32_t i = tmp.degree; i >= x.degree; --i) { |
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| 246 | res[i - x.degree] = tmp[i] * q; |
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| 247 | for (u32_t j = 0; j <= x.degree; ++j) { |
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| 248 | tmp[i - j] -= x[x.degree - j] * res[i - x.degree]; |
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| 249 | } |
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| 250 | } |
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| 251 | return res; |
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| 252 | } else { |
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| 253 | pol_t res = *this; |
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| 254 | u61_t q = x[0].inverse(); |
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| 255 | for (u32_t i = 0; i <= res.degree; ++i) { |
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| 256 | res[i] *= q; |
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| 257 | } |
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| 258 | return res; |
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| 259 | } |
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| 260 | } |
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| 261 | pol_t& pol_t::operator+=(const pol_t&x) { |
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| 262 | return *this = *this + x; |
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| 263 | } |
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| 264 | pol_t& pol_t::operator-=(const pol_t&x) { |
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| 265 | return *this = *this - x; |
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| 266 | } |
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| 267 | pol_t& pol_t::operator*=(const pol_t&x) { |
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| 268 | return *this = *this * x; |
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| 269 | } |
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| 270 | pol_t& pol_t::operator%=(const pol_t&x) { |
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| 271 | return *this = *this % x; |
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| 272 | } |
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| 273 | pol_t& pol_t::operator/=(const pol_t&x) { |
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| 274 | return *this = *this / x; |
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| 275 | } |
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| 276 | pol_t::operator bool() const { |
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| 277 | return degree || data[0]; |
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| 278 | } |
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| 279 | bool pol_t::operator==(const pol_t &x) const { |
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| 280 | if (x.degree != degree) { |
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| 281 | return false; |
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| 282 | } else { |
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| 283 | for (u32_t i = 0; i <= degree; ++i) { |
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| 284 | if (data[i] != x(i)) { |
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| 285 | return false; |
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| 286 | } |
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| 287 | } |
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| 288 | } |
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| 289 | return true; |
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| 290 | } |
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| 291 | pol_t pol_t::pow(u32_t p) const { |
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| 292 | pol_t res, tmp = *this; |
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| 293 | res(0) = 1; |
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| 294 | while (p > 0) { |
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| 295 | if (p & 1) { |
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| 296 | res *= tmp; |
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| 297 | } |
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| 298 | p /= 2; |
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| 299 | tmp *= tmp; |
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| 300 | } |
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| 301 | return res; |
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| 302 | } |
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| 303 | pol_t pol_t::mpow(u64_t p, const pol_t &m) const { |
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| 304 | pol_t res, tmp = *this % m; |
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| 305 | res(0) = 1; |
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| 306 | while (p > 0) { |
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| 307 | if (p & 1) { |
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| 308 | res = res * tmp % m; |
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| 309 | } |
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| 310 | p /= 2; |
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| 311 | tmp = tmp * tmp % m; |
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| 312 | } |
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| 313 | return res; |
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| 314 | } |
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| 315 | pol_t pol_t::mpow(u64_t p, u64_t d, const pol_t &m) const { |
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| 316 | pol_t tmp = mpow((p - 1) / 2, m), res; |
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| 317 | res[0] = 1; |
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| 318 | for (u64_t i = 0; i < d; ++i) { |
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| 319 | res = res * tmp % m; |
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| 320 | tmp = tmp.mpow(p, m); |
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| 321 | } |
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| 322 | return res; |
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| 323 | } |
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| 324 | pol_t pol_t::normalize() const { |
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| 325 | pol_t res = *this; |
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| 326 | u61_t q = data[degree].inverse(); |
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| 327 | for (u32_t i = 0; i <= degree; ++i) { |
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| 328 | res[i] *= q; |
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| 329 | } |
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| 330 | return res; |
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| 331 | } |
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| 332 | pol_t pol_t::deriv() const{ |
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| 333 | pol_t res; |
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| 334 | if (degree) { |
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| 335 | res.change_degree(degree - 1); |
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| 336 | for (u32_t i = degree; i > 0; --i) { |
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| 337 | res[i - 1] = u61_t(i) * data[i]; |
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| 338 | } |
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| 339 | } |
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| 340 | while (res.degree > 0 && !res[res.degree]) { |
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| 341 | --res.degree; |
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| 342 | } |
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| 343 | return res; |
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| 344 | } |
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| 345 | |
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| 346 | void pol_t::read(FILE *fin, pol_format_t format) { |
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| 347 | degree = 0; |
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| 348 | switch (format) |
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| 349 | { |
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| 350 | case BINPR: |
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| 351 | std::fread(°ree, 1, 1, fin); |
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| 352 | if (degree > 256) { |
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| 353 | throw "Incorrect polynomial degree"; |
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| 354 | } |
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| 355 | data.resize(degree + 1); |
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| 356 | for (u32_t i = 0; i <= degree; ++i) { |
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| 357 | u64_t buf; |
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| 358 | std::fread(&buf, BUFSIZE, 1, fin); |
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| 359 | if (buf >= MOD) { |
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| 360 | throw "Incorrect polinomial coefficient"; |
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| 361 | } |
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| 362 | data[i] = buf; |
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| 363 | } |
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| 364 | break; |
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| 365 | case TEXTPR: |
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| 366 | std::fscanf(fin, "%u", °ree); |
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| 367 | if (degree > 256) { |
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| 368 | throw "Incorrect polynomial degree"; |
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| 369 | } |
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| 370 | data.resize(degree + 1); |
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| 371 | for (u32_t i = 0; i <= degree; ++i) { |
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| 372 | u64_t buf; |
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| 373 | std::fscanf(fin, "%llu", &buf); |
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| 374 | if (buf >= MOD) { |
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| 375 | throw "Incorrect polinomial coefficient"; |
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| 376 | } |
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| 377 | data[i] = buf; |
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| 378 | } |
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| 379 | break; |
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| 380 | case HTMLPR: |
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| 381 | break; |
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| 382 | default: |
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| 383 | break; |
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| 384 | } |
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| 385 | } |
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| 386 | void pol_t::write(FILE *fout, pol_format_t format, bool eol) const { |
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| 387 | switch (format) |
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| 388 | { |
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| 389 | case pol::BINPR: |
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| 390 | fwrite(°ree, 1, 1, fout); |
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| 391 | for (u32_t i = 0; i <= degree; ++i) { |
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| 392 | fwrite(data[i].get_addr(), BUFSIZE, 1, fout); |
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| 393 | } |
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| 394 | break; |
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| 395 | case pol::TEXTPR: |
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| 396 | fprintf(fout, "%u ", degree); |
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| 397 | for (u32_t i = 0; i <= degree; ++i) { |
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| 398 | fprintf(fout, "%llu ", data[i].get_buf()); |
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| 399 | } |
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| 400 | if (eol) fprintf(fout, "\n"); |
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| 401 | break; |
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| 402 | case pol::HTMLPR: |
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| 403 | { |
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| 404 | u32_t i = degree; |
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| 405 | u32_t min = 0; |
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| 406 | while (min < degree && !data[min]) ++min; |
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| 407 | --min; |
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| 408 | data[i].print(fout, i); |
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| 409 | --i; |
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| 410 | for (; i != min; --i) { |
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| 411 | if (data[i]) { |
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| 412 | fprintf(fout, " + "); |
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| 413 | data[i].print(fout, i); |
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| 414 | } |
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| 415 | } |
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| 416 | if (eol) fprintf(fout, "<br>"); |
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| 417 | } |
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| 418 | break; |
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| 419 | default: |
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| 420 | break; |
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| 421 | } |
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| 422 | } |
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| 423 | void pol_t::ddf(u32_t max_deg, vector_t &res) const { |
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| 424 | pol_t v = *this, x = get_x(), xp = x, tmp; |
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| 425 | res.resize(max_deg + 1); |
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| 426 | for (u32_t i = 0; i <= max_deg; ++i) { |
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| 427 | res[i](0) = 1; |
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| 428 | } |
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| 429 | u32_t i = 1; |
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| 430 | for (; i <= max_deg; ++i) { |
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| 431 | xp = xp.mpow(MOD, v); |
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| 432 | tmp = gcd(xp - x, v); |
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| 433 | if (tmp.degree > 0) { |
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| 434 | res[i] = tmp; |
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| 435 | v /= tmp; |
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| 436 | } |
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[e5b15b7] | 437 | //fprintf(stderr, "%d of %d\n", i, max_deg); |
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[b939736] | 438 | } |
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| 439 | res[0] = v; |
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| 440 | } |
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| 441 | void pol_t::split(u32_t deg, vector_t &res) const { |
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| 442 | u32_t count = degree / deg, found = 0; |
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| 443 | pol_t r_pol, r_gcd, unit; |
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| 444 | unit[0] = 1; |
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| 445 | std::list<pol_t> l1, l2; |
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| 446 | l1.push_back(*this); |
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| 447 | std::list<pol_t> *cur = &l1, *next = &l2; |
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| 448 | while (found < count) { |
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| 449 | r_pol = get_rand_pol(deg); |
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| 450 | next->clear(); |
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| 451 | for (auto i = cur->begin(), end = cur->end(); i != end; ++i) { |
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| 452 | if (i->degree == deg) { |
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| 453 | res.push_back(*i); |
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| 454 | ++found; |
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| 455 | } else { |
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| 456 | r_gcd = gcd(r_pol.mpow(MOD, deg, *i) - unit, *i); |
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| 457 | if (r_gcd.degree && r_gcd.degree < i->degree) { |
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| 458 | *i /= r_gcd; |
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| 459 | if (i->degree == deg) { |
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| 460 | res.push_back(*i); |
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| 461 | ++found; |
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| 462 | } |
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| 463 | else { |
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| 464 | next->push_back(*i); |
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| 465 | } |
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| 466 | if (r_gcd.degree == deg) { |
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| 467 | res.push_back(r_gcd); |
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| 468 | ++found; |
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| 469 | } |
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| 470 | else { |
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| 471 | next->push_back(r_gcd); |
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| 472 | } |
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| 473 | } |
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| 474 | else { |
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| 475 | next->push_back(*i); |
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| 476 | } |
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| 477 | } |
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| 478 | } |
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| 479 | std::swap(cur, next); |
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| 480 | } |
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| 481 | } |
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| 482 | void pol_t::fact(u32_t max_deg, vector_t &res) const { |
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| 483 | pol_t d = gcd(deriv(), *this), tmp; |
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| 484 | if (d.degree) { |
---|
| 485 | tmp = *this / d; |
---|
| 486 | } else { |
---|
| 487 | tmp = *this; |
---|
| 488 | } |
---|
| 489 | std::vector<pol_t> ddf_pol; |
---|
| 490 | tmp.ddf(max_deg, ddf_pol); |
---|
| 491 | for (u32_t i = 1; i <= max_deg; ++i) { |
---|
| 492 | if (ddf_pol[i].degree > 0) { |
---|
| 493 | ddf_pol[i].split(i, res); |
---|
| 494 | } |
---|
| 495 | } |
---|
| 496 | if (d.degree) { |
---|
| 497 | for (size_t i = 0, size = res.size(); i < size && d.degree; ++i) { |
---|
| 498 | while (!(d % res[i])) { |
---|
| 499 | res.push_back(res[i]); |
---|
| 500 | d /= res[i]; |
---|
| 501 | } |
---|
| 502 | } |
---|
| 503 | } |
---|
| 504 | } |
---|
| 505 | |
---|
| 506 | deg_t::deg_t() : key(0) {} |
---|
| 507 | deg_t::deg_t(u32_t a, u32_t b) : |
---|
| 508 | x(a), |
---|
| 509 | y(b) |
---|
| 510 | { |
---|
| 511 | } |
---|
| 512 | bool deg_t::operator<(const deg_t °) const{ |
---|
| 513 | return key < deg.key; |
---|
| 514 | } |
---|
| 515 | bool deg_t::operator==(const deg_t °) const{ |
---|
| 516 | return key == deg.key; |
---|
| 517 | } |
---|
| 518 | deg_t deg_t::operator+(const deg_t °) const { |
---|
| 519 | return deg_t(x + deg.x, y + deg.y); |
---|
| 520 | } |
---|
| 521 | |
---|
| 522 | pol3v_t::pol3v_t() { |
---|
| 523 | data.clear(); |
---|
| 524 | data.push_back(pol3v1_t()); |
---|
| 525 | dx = 0; dy = 0; dt = 0; |
---|
| 526 | } |
---|
| 527 | pol3v_t::pol3v_t(const polmap_t &m) : |
---|
| 528 | data(), |
---|
| 529 | dx(0), |
---|
| 530 | dy(0), |
---|
| 531 | dt(0) |
---|
| 532 | { |
---|
| 533 | data.clear(); |
---|
| 534 | bool empty = true; |
---|
| 535 | for (auto i = m.begin(); i != m.end(); ++i) { |
---|
| 536 | if (i->second) { |
---|
| 537 | if (empty) { |
---|
| 538 | empty = false; |
---|
| 539 | } |
---|
| 540 | data.push_back(*i); |
---|
| 541 | if (dx < i->first.x) dx = i->first.x; |
---|
| 542 | if (dy < i->first.y) dy = i->first.y; |
---|
| 543 | if (dt < i->second.get_deg()) dt = i->second.get_deg(); |
---|
| 544 | } |
---|
| 545 | } |
---|
| 546 | if (empty) { |
---|
| 547 | data.push_back(pol3v1_t()); |
---|
| 548 | } |
---|
| 549 | } |
---|
| 550 | pol3v_t& pol3v_t::operator=(const pol3v_t &x) { |
---|
| 551 | if (&x != this) { |
---|
| 552 | data.clear(); |
---|
| 553 | data = x.data; |
---|
| 554 | dx = x.dx; dy = x.dy; dt = x.dt; |
---|
| 555 | } |
---|
| 556 | return *this; |
---|
| 557 | } |
---|
| 558 | pol3v_t pol3v_t::operator+(const pol3v_t &x) const { |
---|
| 559 | polmap_t tmp; |
---|
| 560 | for (auto i = data.begin(); i != data.end(); ++i) { |
---|
| 561 | if (tmp.find(i->first) == tmp.end()) { |
---|
| 562 | tmp.insert(*i); |
---|
| 563 | } else { |
---|
| 564 | tmp[i->first] += i->second; |
---|
| 565 | } |
---|
| 566 | } |
---|
| 567 | for (auto i = x.data.begin(); i != x.data.end(); ++i) { |
---|
| 568 | if (tmp.find(i->first) == tmp.end()) { |
---|
| 569 | tmp.insert(*i); |
---|
| 570 | } else { |
---|
| 571 | tmp[i->first] += i->second; |
---|
| 572 | } |
---|
| 573 | } |
---|
| 574 | return tmp; |
---|
| 575 | } |
---|
| 576 | pol3v_t pol3v_t::operator-(const pol3v_t &x) const { |
---|
| 577 | polmap_t tmp; |
---|
| 578 | for (auto i = data.begin(); i != data.end(); ++i) { |
---|
| 579 | if (tmp.find(i->first) == tmp.end()) { |
---|
| 580 | tmp.insert(*i); |
---|
| 581 | } else { |
---|
| 582 | tmp[i->first] += i->second; |
---|
| 583 | } |
---|
| 584 | } |
---|
| 585 | for (auto i = x.data.begin(); i != x.data.end(); ++i) { |
---|
| 586 | if (tmp.find(i->first) == tmp.end()) { |
---|
| 587 | tmp.insert(pol3v1_t(i->first, pol_t() - i->second)); |
---|
| 588 | } else { |
---|
| 589 | tmp[i->first] -= i->second; |
---|
| 590 | } |
---|
| 591 | } |
---|
| 592 | return tmp; |
---|
| 593 | } |
---|
| 594 | pol3v_t pol3v_t::operator*(const pol3v_t &x) const { |
---|
| 595 | polmap_t tmp; |
---|
| 596 | for (auto i = data.begin(); i != data.end(); ++i) { |
---|
| 597 | for (auto j = x.data.begin(); j != x.data.end(); ++j) { |
---|
| 598 | if (tmp.find(i->first + j->first) == tmp.end()) { |
---|
| 599 | tmp.insert(pol3v1_t(i->first + j->first, i->second * j->second)); |
---|
| 600 | } else { |
---|
| 601 | tmp[i->first + j->first] += i->second * j->second; |
---|
| 602 | } |
---|
| 603 | } |
---|
| 604 | } |
---|
| 605 | return tmp; |
---|
| 606 | } |
---|
| 607 | pol3v_t& pol3v_t::operator+=(const pol3v_t &x) { |
---|
| 608 | return *this = *this + x; |
---|
| 609 | } |
---|
| 610 | pol3v_t& pol3v_t::operator-=(const pol3v_t &x) { |
---|
| 611 | return *this = *this - x; |
---|
| 612 | } |
---|
| 613 | pol3v_t& pol3v_t::operator*=(const pol3v_t &x) { |
---|
| 614 | return *this = *this * x; |
---|
| 615 | } |
---|
| 616 | pol_t pol3v_t::subst(const pol_t &x, const pol_t &y) const { |
---|
| 617 | pol_t res; |
---|
| 618 | for (auto i = data.begin(), end = data.end(); i != end; ++i) { |
---|
| 619 | res += x.pow(i->first.x) * y.pow(i->first.y) * i->second; |
---|
| 620 | } |
---|
| 621 | return res; |
---|
| 622 | } |
---|
| 623 | pol3v_t pol3v_t::get_same_rand_pol() const { |
---|
| 624 | pol3v_t res = *this; |
---|
| 625 | for (auto i = res.data.begin(), end = res.data.end(); i != end; ++i) { |
---|
| 626 | i->second = get_rand_pol(i->second.get_deg(), false); |
---|
| 627 | } |
---|
| 628 | return res; |
---|
| 629 | } |
---|
| 630 | void pol3v_t::read(FILE *fin, pol_format_t format) { |
---|
| 631 | size_t count = 0; |
---|
| 632 | data.clear(); |
---|
| 633 | switch (format) |
---|
| 634 | { |
---|
| 635 | case BINPR: |
---|
| 636 | { |
---|
| 637 | std::fread(&count, 1, sizeof(count), fin); |
---|
| 638 | if (!count) { |
---|
| 639 | data.push_back(pol3v1_t()); |
---|
| 640 | dx = 0; dy = 0; dt = 0; |
---|
| 641 | } |
---|
| 642 | deg_t deg; |
---|
| 643 | for (size_t i = 0; i < count; ++i) { |
---|
| 644 | std::fread(&(deg.key), sizeof(deg.key), 1, fin); |
---|
| 645 | pol_t tmp; |
---|
| 646 | tmp.read(fin, BINPR); |
---|
| 647 | if (tmp) { |
---|
| 648 | data.push_back(pol3v1_t(deg, tmp)); |
---|
| 649 | if (deg.x > dx) dx = deg.x; |
---|
| 650 | if (deg.y > dy) dy = deg.y; |
---|
| 651 | if (tmp.get_deg() > dt) dt = tmp.get_deg(); |
---|
| 652 | } |
---|
| 653 | } |
---|
| 654 | break; |
---|
| 655 | } |
---|
| 656 | case TEXTPR: |
---|
| 657 | std::fscanf(fin, "%zu", &count); |
---|
| 658 | if (!count) { |
---|
| 659 | data.clear(); |
---|
| 660 | data.push_back(pol3v1_t()); |
---|
| 661 | dx = 0; dy = 0; dt = 0; |
---|
| 662 | } else { |
---|
| 663 | for (size_t i = 0; i < count; ++i) { |
---|
| 664 | u32_t v[2]; |
---|
| 665 | fscanf(fin, "%u%u", v, v + 1); |
---|
| 666 | pol_t tmp; |
---|
| 667 | tmp.read(fin, TEXTPR); |
---|
| 668 | if (tmp) { |
---|
| 669 | data.push_back(pol3v1_t(deg_t(v[0], v[1]), tmp)); |
---|
| 670 | if (v[0] > dx) dx = v[0]; |
---|
| 671 | if (v[1] > dy) dy = v[1]; |
---|
| 672 | if (tmp.get_deg() > dt) dt = tmp.get_deg(); |
---|
| 673 | } |
---|
| 674 | } |
---|
| 675 | } |
---|
| 676 | break; |
---|
| 677 | case HTMLPR: |
---|
| 678 | break; |
---|
| 679 | default: |
---|
| 680 | break; |
---|
| 681 | } |
---|
| 682 | } |
---|
| 683 | void pol3v_t::write(FILE *fout, pol_format_t format, bool eol) const { |
---|
| 684 | size_t count = data.size(); |
---|
| 685 | switch (format) |
---|
| 686 | { |
---|
| 687 | case pol::BINPR: |
---|
| 688 | std::fwrite(&count, 1, sizeof(count), fout); |
---|
| 689 | for (auto i = data.begin(), end = data.end(); i != end; ++i) { |
---|
| 690 | std::fwrite(&(i->first.key), sizeof(i->first.key), 1, fout); |
---|
| 691 | i->second.write(fout, BINPR); |
---|
| 692 | } |
---|
| 693 | break; |
---|
| 694 | case TEXTPR: |
---|
| 695 | std::fprintf(fout, "%zu\n", count); |
---|
| 696 | for (auto i = data.begin(), end = data.end(); i != end; ++i) { |
---|
| 697 | fprintf(fout, "%u %u ", i->first.x, i->first.y); |
---|
| 698 | i->second.write(fout, TEXTPR, true); |
---|
| 699 | } |
---|
| 700 | if (eol) { |
---|
| 701 | fprintf(fout, "\n"); |
---|
| 702 | } |
---|
| 703 | break; |
---|
| 704 | case pol::HTMLPR: |
---|
| 705 | if (!count) { |
---|
| 706 | fprintf(fout, "0"); |
---|
| 707 | } else { |
---|
| 708 | auto i = data.rbegin(); |
---|
| 709 | if (i->first.x > 1) { |
---|
| 710 | fprintf(fout, "x<sup>%u</sup>", i->first.x); |
---|
| 711 | } |
---|
| 712 | else if (i->first.x == 1) { |
---|
| 713 | fprintf(fout, "x"); |
---|
| 714 | } |
---|
| 715 | if (i->first.y > 1) { |
---|
| 716 | fprintf(fout, "y<sup>%u</sup>", i->first.y); |
---|
| 717 | } |
---|
| 718 | else if (i->first.y == 1) { |
---|
| 719 | fprintf(fout, "y"); |
---|
| 720 | } |
---|
| 721 | fprintf(fout, "("); |
---|
| 722 | i->second.write(fout, HTMLPR); |
---|
| 723 | fprintf(fout, ")"); |
---|
| 724 | ++i; |
---|
| 725 | for (auto end = data.rend(); i != end; ++i) { |
---|
| 726 | fprintf(fout, " + "); |
---|
| 727 | if (i->first.x > 1) { |
---|
| 728 | fprintf(fout, "x<sup>%u</sup>", i->first.x); |
---|
| 729 | } |
---|
| 730 | else if (i->first.x == 1) { |
---|
| 731 | fprintf(fout, "x"); |
---|
| 732 | } |
---|
| 733 | if (i->first.y > 1) { |
---|
| 734 | fprintf(fout, "y<sup>%u</sup>", i->first.y); |
---|
| 735 | } |
---|
| 736 | else if (i->first.y == 1) { |
---|
| 737 | fprintf(fout, "y"); |
---|
| 738 | } |
---|
| 739 | fprintf(fout, "("); |
---|
| 740 | i->second.write(fout, HTMLPR); |
---|
| 741 | fprintf(fout, ")"); |
---|
| 742 | } |
---|
| 743 | } |
---|
| 744 | if (eol) { |
---|
| 745 | fprintf(fout, "<br>"); |
---|
| 746 | } |
---|
| 747 | break; |
---|
| 748 | default: |
---|
| 749 | break; |
---|
| 750 | } |
---|
| 751 | } |
---|
| 752 | |
---|
| 753 | File::File() : |
---|
| 754 | file(NULL), |
---|
| 755 | opened(false), |
---|
| 756 | mode(READ), |
---|
| 757 | buf(0), |
---|
| 758 | pos(0), |
---|
| 759 | count(0) |
---|
| 760 | { |
---|
| 761 | } |
---|
| 762 | File::File(FILE *_file, file_mode_t m) : |
---|
| 763 | file(_file), |
---|
| 764 | opened(false), |
---|
| 765 | mode(m), |
---|
| 766 | buf(0), |
---|
| 767 | pos(0), |
---|
| 768 | count(0) |
---|
| 769 | { |
---|
| 770 | } |
---|
| 771 | File::File(const char *file_name, file_mode_t m) : |
---|
| 772 | file(NULL), |
---|
| 773 | opened(false), |
---|
| 774 | mode(m), |
---|
| 775 | buf(0), |
---|
| 776 | pos(0), |
---|
| 777 | count(0) |
---|
| 778 | { |
---|
| 779 | if (!open(file_name, m)) { |
---|
| 780 | throw "Can't open the file"; |
---|
| 781 | } |
---|
| 782 | } |
---|
| 783 | File::~File() { |
---|
| 784 | close(); |
---|
| 785 | } |
---|
| 786 | bool File::open(const char *file_name, file_mode_t m) { |
---|
| 787 | if ((mode = m) == READ) { |
---|
| 788 | file = fopen(file_name, "rb"); |
---|
| 789 | } else { |
---|
| 790 | file = fopen(file_name, "wb"); |
---|
| 791 | } |
---|
| 792 | return opened = !!(file); |
---|
| 793 | } |
---|
| 794 | void File::close() { |
---|
| 795 | if (opened) { |
---|
| 796 | flush(); |
---|
| 797 | fclose(file); |
---|
| 798 | opened = false; |
---|
| 799 | mode = READ; |
---|
| 800 | } |
---|
| 801 | } |
---|
| 802 | void File::flush() { |
---|
| 803 | if (mode == WRITE && count) { |
---|
| 804 | buf = (buf >> pos) & ((1ull << count) - 1); |
---|
| 805 | fwrite(&buf, 1, (count - 1) / 8 + 1, file); |
---|
| 806 | } |
---|
| 807 | count = 0; |
---|
| 808 | pos = 0; |
---|
| 809 | buf = 0; |
---|
| 810 | } |
---|
| 811 | size_t File::read(u61_t &block) { |
---|
| 812 | if (mode != READ || !opened) { |
---|
| 813 | throw "Incorrect read"; |
---|
| 814 | } |
---|
| 815 | u64_t res = 0; |
---|
| 816 | size_t cur = 0; |
---|
| 817 | if (count) { |
---|
| 818 | res = (buf >> pos) & ((1ull << MODSIZE) - 1) & ((1ull << count) - 1); |
---|
| 819 | cur = count < MODSIZE ? count : MODSIZE; |
---|
| 820 | } |
---|
| 821 | if (cur < MODSIZE) { |
---|
| 822 | buf = 0; |
---|
| 823 | count = 8 * fread(&buf, 1, (MODSIZE - cur - 1) / 8 + 1, file); |
---|
| 824 | read_size += count / 8; |
---|
| 825 | res |= (buf << cur) & ((1ull << MODSIZE) - 1); |
---|
| 826 | } |
---|
| 827 | if (res >= MOD || (res < (1ull << (MODSIZE - 1)))) { |
---|
| 828 | res &= (1ull << (MODSIZE - 1)) - 1; |
---|
| 829 | if (count > MODSIZE - 1 - cur) { |
---|
| 830 | count -= MODSIZE - 1 - cur; |
---|
| 831 | pos = MODSIZE - 1 - cur; |
---|
| 832 | cur = MODSIZE - 1; |
---|
| 833 | } else { |
---|
| 834 | cur += count; |
---|
| 835 | count = 0; |
---|
| 836 | } |
---|
| 837 | } else { |
---|
| 838 | count -= MODSIZE - cur; |
---|
| 839 | pos = MODSIZE - cur; |
---|
| 840 | cur = MODSIZE; |
---|
| 841 | } |
---|
| 842 | block = res; |
---|
| 843 | return cur; |
---|
| 844 | } |
---|
| 845 | size_t File::write(const u61_t &block, size_t block_size) { |
---|
| 846 | if (mode != WRITE || !opened) { |
---|
| 847 | throw "Incorrect write"; |
---|
| 848 | } |
---|
| 849 | u64_t tmp = block; |
---|
| 850 | size_t size; |
---|
| 851 | if (tmp >= (1ull << (MODSIZE - 1))) { |
---|
| 852 | size = MODSIZE; |
---|
| 853 | } else { |
---|
| 854 | size = block_size; |
---|
| 855 | } |
---|
| 856 | if (!count) { |
---|
| 857 | buf = 0; |
---|
| 858 | } |
---|
| 859 | buf |= tmp << count; |
---|
| 860 | if (size + count >= 8 * sizeof(buf)) { |
---|
| 861 | fwrite(&buf, 1, sizeof(buf), file); |
---|
| 862 | } |
---|
| 863 | if (size + count > 8 *sizeof(buf)) { |
---|
| 864 | buf = tmp >> (sizeof(buf)* 8 - count); |
---|
| 865 | } |
---|
| 866 | count = (size + count) % (8 * sizeof(buf)); |
---|
| 867 | return size; |
---|
| 868 | } |
---|
| 869 | |
---|
| 870 | random_t::random_t() : |
---|
| 871 | generator(std::time(NULL)) |
---|
| 872 | { |
---|
| 873 | } |
---|
| 874 | u61_t random_t::operator()() { |
---|
| 875 | return u64_t((generator() - 1.) / generator.max() * MOD); |
---|
| 876 | } |
---|
| 877 | |
---|
| 878 | pol_t pol::gcd(const pol_t &x, const pol_t &y) { |
---|
| 879 | pol_t a = x, b = y, q; |
---|
| 880 | while (q = a % b, q) { |
---|
| 881 | a = b; |
---|
| 882 | b = q; |
---|
| 883 | } |
---|
| 884 | return b.normalize(); |
---|
| 885 | } |
---|
| 886 | pol_t pol::get_x() { |
---|
| 887 | pol_t res; |
---|
| 888 | res.change_degree(1); |
---|
| 889 | res[1] = 1; |
---|
| 890 | return res; |
---|
| 891 | } |
---|
| 892 | |
---|
| 893 | pol_t pol::get_rand_pol(u32_t deg, bool flag) { |
---|
| 894 | static random_t get_coef; |
---|
| 895 | pol_t res; |
---|
| 896 | res.change_degree(deg); |
---|
| 897 | //res[deg] = flag ? 1 : get_coef(); |
---|
| 898 | while (!res(deg)) { |
---|
| 899 | res[deg] = get_coef(); |
---|
| 900 | } |
---|
| 901 | for (u32_t i = 0; i < deg; ++i) { |
---|
| 902 | res[i] = get_coef(); |
---|
| 903 | } |
---|
| 904 | return res; |
---|
| 905 | } |
---|
| 906 | |
---|
[130b818] | 907 | |
---|
[b939736] | 908 | pol3v_t pol::XXX_get_f(const u64_t max_deg, const u32_t key_deg) { |
---|
| 909 | polmap_t tmp; |
---|
| 910 | for (u32_t i = 0; i <= max_deg; ++i) { |
---|
| 911 | tmp.insert(pol3v1_t(deg_t(i, i), get_rand_pol(key_deg - 1))); |
---|
| 912 | } |
---|
| 913 | return tmp; |
---|
| 914 | } |
---|
[130b818] | 915 | |
---|
[b939736] | 916 | pol3v_t pol::XXX_get_mes(const u64_t max_deg, const u32_t key_deg, const u64_t size, const std::vector<u61_t> &m) { |
---|
| 917 | polmap_t tmp; |
---|
| 918 | pol_t tmp2; |
---|
| 919 | u64_t block_count = m.size(); |
---|
| 920 | tmp2.change_degree(key_deg - 1); |
---|
| 921 | for (u32_t i = 0; i < max_deg; ++i) { |
---|
| 922 | for (u32_t j = 0; j < key_deg; ++j) { |
---|
| 923 | if (i * key_deg + j < block_count) { |
---|
| 924 | tmp2[j] = m[block_count - 1 - (i * key_deg + j)]; |
---|
| 925 | } |
---|
| 926 | else { |
---|
| 927 | tmp2(j) = 0; |
---|
| 928 | } |
---|
| 929 | } |
---|
| 930 | tmp.insert(pol3v1_t(deg_t(i, i), tmp2)); |
---|
| 931 | } |
---|
| 932 | tmp2.change_degree(0); |
---|
| 933 | tmp2[0] = size; |
---|
| 934 | tmp.insert(pol3v1_t(deg_t(u32_t(max_deg), u32_t(max_deg)), tmp2)); |
---|
| 935 | return tmp; |
---|
| 936 | } |
---|
| 937 | void pol::XXX_get_fact(const vector_t &fact, u64_t deg, vector_t &res) { |
---|
| 938 | size_t num = fact.size(); |
---|
| 939 | std::vector<std::list<pol_t>> tmp; |
---|
| 940 | tmp.resize(deg + 1); |
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| 941 | for (size_t i = 0; i < num; ++i) { |
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| 942 | u32_t pol_deg = fact[i].get_deg(); |
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| 943 | for (auto j = tmp.rbegin(); j != tmp.rend(); ++j) { |
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| 944 | for (auto it = j->begin(); it != j->end(); ++it) { |
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| 945 | if (pol_deg + it->get_deg() <= deg) { |
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| 946 | tmp[pol_deg + it->get_deg()].push_back(fact[i] * *it); |
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| 947 | } |
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| 948 | } |
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| 949 | } |
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| 950 | if (pol_deg <= deg) { |
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| 951 | tmp[pol_deg].push_back(fact[i]); |
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| 952 | } |
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| 953 | } |
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| 954 | res.clear(); |
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| 955 | for (auto i = tmp[deg].begin(); i != tmp[deg].end(); ++i) { |
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| 956 | res.push_back(*i); |
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| 957 | } |
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| 958 | } |
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[130b818] | 959 | |
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