Time Lapse :3hour 2min 32sec
5987.c
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| #include <stdio.h> #include <memory.h> #define gc() getchar_unlocked() #define pc(x) putchar_unlocked(x) #define ll long long int N; ll factorial[17]; int aft[17][17], u[17], bef[17], dp[1 << 17]; int fRI() { register int N = gc(), ret = 0; for (; N < 48 || N>57; N = gc()); do { ret = (ret << 3) + (ret << 1) + (N & 0b1111); N = gc(); } while ('0' <= N); return ret; } void fWA(int tc, ll a) { ll r = 0, c = 0; pc('#'); while (!(tc % 10)) { c++; tc /= 10; } while (tc) { r = (r << 3) + (r << 1) + tc % 10; tc /= 10; } while (r) { pc(r % 10 | 0b110000); r /= 10; } while (c--) pc(48); pc(' '); c = 0; while (!(a % 10)) { c++; a /= 10; } while (a) { r = (r << 3) + (r << 1) + a % 10; a /= 10; } while (r) { pc(r % 10 | 0b110000); r /= 10; } while (c--) pc(48); pc('\n'); } ll dfs(int s) { if (!s) return 1; if (dp[s]) return dp[s]; for (register int i = 1; i <= N; i++) { if (bef[i]) continue; bef[i]--; for (register int j = 1; j <= N; j++) if(aft[i][j]) bef[j]--; dp[s] += dfs(s ^ (1 << (i - 1))); for (register int j = 1; j <= N; j++) if (aft[i][j]) bef[j]++; bef[i]++; } return dp[s]; } void mset(int s) { if (!dp[s]) return; dp[s] = 0; for (register int i = 1; i <= N; i++) if (s&(1 << (i - 1))) mset(s ^ (1 << (i - 1))); } int main(int argc, char** argv) { register int tc = 1, T = fRI(), M, x, y, i; factorial[1] = factorial[0] = 1; for (i = 2; i <= 16; i++) factorial[i] = factorial[i - 1] * i; while (T--) { N = fRI(), M = fRI(); for (i = 0; i < M; i++) { x = fRI(), y = fRI(); aft[x][y] ^=1; u[x] = u[y] = 1; ++bef[y]; } x = y = 0; for (i = 1; i <= N; i++) u[i] ? (++x, y ^= 1 << (i - 1)) : (bef[i]--); fWA(tc++, factorial[N] / factorial[x] * dfs(y)); if (T) {mset(y); memset(aft, 0, sizeof(int)*(17)*(N+1)); memset(u, 0, sizeof(int)*(N+1)); memset(bef, 0, sizeof(int)*(N+1)); } } }
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