105 lines
2.6 KiB
C++
105 lines
2.6 KiB
C++
#include<stdio.h>
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#include<string.h>
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#define MAXD 1010
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#define MAXM 10010
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#define ST 74
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#define MAXQ 74010
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#define INF 0x3f3f3f3f
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const int Q = 74000;
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int N, M, P, first[MAXD], e, next[MAXM], v[MAXM], w[MAXM];
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int bit[MAXD], q[MAXQ], front, rear, inq[MAXD][ST];
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int f[MAXD][ST], dp[ST];
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void add(int x, int y, int z)
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{
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v[e] = y, w[e] = z;
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next[e] = first[x], first[x] = e ++;
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}
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void init()
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{
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int i, x, y, z;
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memset(f, 0x3f, sizeof(f));
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memset(bit, 0, sizeof(bit));
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for(i = 1; i <= N + M; i ++)
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{
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if(i <= N) bit[i] = 1 << i - 1;
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scanf("%d", &z);
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if(i <= N) f[i][bit[i]] = 0, f[i][bit[i] | 1 << N] = z;
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else f[i][1 << N] = z;
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}
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memset(first, -1, sizeof(first));
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e = 0;
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for(i = 0; i < P; i ++)
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{
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scanf("%d%d%d", &x, &y, &z);
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add(x, y, z), add(y, x, z);
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}
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}
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int Min(int x, int y)
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{
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return x < y ? x : y;
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}
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void spfa()
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{
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int i, x, st, y, nst;
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while(front != rear)
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{
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x = q[front] & 1023, st = q[front] >> 10;
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inq[x][st] = 0;
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++ front > Q ? front = 0 : 0;
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for(i = first[x]; i != -1; i = next[i])
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{
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y = v[i], nst = st | bit[y];
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if(f[x][st] + w[i] < f[y][nst])
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{
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f[y][nst] = f[x][st] + w[i];
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if(st == nst && !inq[y][nst])
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{
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q[rear ++] = nst << 10 | y, inq[y][nst] = 1;
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rear > Q ? rear = 0 : 0;
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}
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}
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}
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}
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}
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void solve()
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{
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int i, j, k, nn = 1 << N + 1;
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front = rear = 0;
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memset(inq, 0, sizeof(inq));
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for(i = 0; i < nn; i ++)
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{
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for(j = 1; j <= N + M; j ++)
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{
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for(k = i - 1 & i; k; k = k - 1 & i)
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f[j][i] = Min(f[j][i], f[j][k | bit[j]] + f[j][i - k | bit[j]]);
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if(f[j][i] < INF)
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{
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q[rear ++] = i << 10 | j, inq[j][i] = 1;
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rear > Q ? rear = 0 : 0;
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}
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}
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spfa();
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}
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memset(dp, 0x3f, sizeof(dp));
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for(i = 0; i < nn; i ++)
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for(j = 1; j <= N + M; j ++)
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dp[i] = Min(dp[i], f[j][i]);
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for(i = 0; i < nn; i ++)
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if(i & 1 << N)
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{
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for(j = i - 1 & i; j; j = j - 1 & i)
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if(j & 1 << N)
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dp[i] = Min(dp[i], dp[j] + dp[i - j | 1 << N]);
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}
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printf("%d\n", dp[(1 << N + 1) - 1]);
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}
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int main()
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{
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while(scanf("%d%d%d", &N, &M, &P) == 3)
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{
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init();
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solve();
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}
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return 0;
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}
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