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uva 10604
状态压缩 奇怪的是A与B混合 和 B与A 混合得到的热量可能不同
#include <cstdio>#include <cstdlib>#include <cmath>#include <set>#include <stack>#include <vector>#include <sstream>#include <cstring>#include <string>#include <map>#include <queue>#include <algorithm>#include <iostream>#define FFI freopen("in.txt", "r", stdin)#define maxn 1000100#define INF 0x3f3f3f3f#define inf 10000000#define MOD 1000000007#define ULL unsigned long long#define LL long long#define _setm(houge) memset(houge, INF, sizeof(houge))#define _setf(houge) memset(houge, -1, sizeof(houge))#define _clear(houge) memset(houge, 0, sizeof(houge))using namespace std;int g[10][10], r[10][10];int dp[1500][10];int a[20], n, k;int main() { // FFI; int t; scanf("%d", &t); while(t --) { scanf("%d", &n); for(int i = 1; i <= n; ++ i) { for(int j = 1; j <= n; ++ j) { scanf("%d%d", &g[i][j], &r[i][j]); } } scanf("%d", &k); for(int i = 0; i < k; ++ i) { scanf("%d", &a[i]); } _setm(dp); for(int i = 0; i < k; ++ i) { dp[1<<i][a[i]] = 0; } int tot = (1<<k); for(int s = 0; s < tot; ++ s) { for(int i = 1; i <= n; ++ i) { if(dp[s][i] == INF) continue; for(int s2 = 0; s2 < tot; ++ s2) { if(s&s2) continue; for(int j = 1; j <= n; ++ j) { if(dp[s2][j] == INF) continue; int S = s|s2, now = g[i][j], v = r[i][j]; int now2 = g[j][i], v2 = r[j][i]; dp[S][now] = min(dp[S][now], dp[s][i]+dp[s2][j]+v); dp[S][now2] = min(dp[S][now2], dp[s][i]+dp[s2][j]+v2); } } } } int ans = INF; for(int i = 1; i <= n; ++ i) { ans = min(ans, dp[tot-1][i]); } printf("%d\n", ans); char a[2]; scanf("%s", a); } return 0;}
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