結果
問題 |
No.5005 3-SAT
|
ユーザー |
![]() |
提出日時 | 2022-03-28 19:13:13 |
言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 1,937 ms / 2,000 ms |
コード長 | 1,864 bytes |
コンパイル時間 | 1,595 ms |
実行使用メモリ | 6,952 KB |
スコア | 96,995 |
最終ジャッジ日時 | 2022-04-29 13:36:40 |
合計ジャッジ時間 | 199,250 ms |
ジャッジサーバーID (参考情報) |
judge13 / judge11 |
純コード判定しない問題か言語 |
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ファイルパターン | 結果 |
---|---|
other | AC * 100 |
ソースコード
#include <bits/stdc++.h> using namespace std; class xrand { uint64_t x; public: using result_type = uint32_t; static constexpr result_type min() { return numeric_limits<result_type>::min(); } static constexpr result_type max() { return numeric_limits<result_type>::max(); } xrand(uint64_t k) : x(k) {} xrand() : xrand(1) {} result_type operator()() { x ^= x << 9; x ^= x >> 7; return (x * 0x123456789abcdef) >> 32; } }; constexpr int n = 256, len = 2048; uint32_t a[len], b[len], c[len], a1[len], b1[len], c1[len]; xrand rng; uniform_int_distribution dist(0, n - 1), dist2(0, 1); uniform_real_distribution<double> d1(0, 1); int calc_score(const bitset<n> &s) { for (int i = 0; i < len; i++) { if (s[a[i]] != a1[i] and s[b[i]] != b1[i] and s[c[i]] != c1[i]) { return i; } } return len; } int main() { const clock_t start = clock(); for (int i = 0; i < len; i++) { cin >> a[i] >> b[i] >> c[i] >> a1[i] >> b1[i] >> c1[i]; } bitset<n> best, s; int best_score = calc_score(best), prev_score = best_score; constexpr double start_temp = 10, end_temp = 1; while (true) { const double phase = (clock() - start) / (1.9 * CLOCKS_PER_SEC); if (phase >= 1) break; const double temp = start_temp * pow(end_temp / start_temp, phase); const int idx = dist(rng); s.flip(idx); const int score = calc_score(s); const double prob = exp(min(0, score - prev_score) / temp); if (prob < 1 and d1(rng) >= prob) { s.flip(idx); } else { prev_score = score; if (score > best_score) { best_score = score; best = s; } } } cout << best << endl; return 0; }