92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
#include <iostream>
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#include <cstdio>
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#include <cstring>
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using namespace std;
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#define INF 2000000000
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int q[4*(1<<17)][2];
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int maxQ=4*(1<<17)-3;
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int front,rear,n,m;
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int mat[20][20];
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int dp[1<<17],f[1<<17],dist[1<<17][18],vis[1<<17][18];
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int main ()
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{
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int T;scanf("%d",&T);
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for(int kk=1;kk<=T;++kk)
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{
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scanf("%d%d",&n,&m);
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memset(dist,127,sizeof(dist));
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memset(dp,127,sizeof(dp));
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memset(vis,0,sizeof(vis));
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memset(mat,127,sizeof(mat));
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front=rear=0;
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int u,v,s;
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for(int i=1;i<=m;++i)
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{
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scanf("%d%d%d",&u,&v,&s);
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u--;v--;
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if(mat[u][v]>s)
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mat[u][v]=mat[v][u]=s;
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}
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dist[0][0]=0;
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q[++rear][0]=0;q[rear][1]=0;
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vis[0][0]=1;
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while(front!=rear)
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{
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if(++front==maxQ) front=0;
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int u_sta=q[front][0],u=q[front][1];
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vis[u_sta][u]=0;
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for(int i=0;i<n;++i)
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{
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int v_sta=u_sta|(1<<i);
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if(dist[v_sta][i]>dist[u_sta][u]+mat[u][i])
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{
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dist[v_sta][i]=dist[u_sta][u]+mat[u][i];
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if(!vis[v_sta][i])
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{
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if(++rear==maxQ) rear=0;
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vis[v_sta][i]=1;
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q[rear][0]=v_sta;q[rear][1]=i;
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}
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}
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}
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}
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for(int i=0;i<(1<<n);++i)
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for(int j=0;j<n;++j)
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dp[i>>1]=min(dp[i>>1],dist[i][j]);
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int tot_sta=1<<n-1;
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for(int i=0;i<tot_sta;++i)
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f[i]=dp[i];
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for(int k=1;k<=2;++k)
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{
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for(int i=tot_sta-1;i;--i)
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for(u=i;u;u=(--u)&i)
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{
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v=i^u;
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if(dp[i]>max(dp[u],f[v]))
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{
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if(i==224 && max(dp[u],f[v])==5)
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cout<<"dd";
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dp[i]=max(dp[u],f[v]);
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}
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}
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}
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int query;scanf("%d",&query);
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int sta=0;
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while(query--)
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{
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scanf("%d",&u);
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sta|=1<<u-2;
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}
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int ans=INF;
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for(int i=0;i<tot_sta;++i)
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if((i&sta)==sta)
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{
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ans=min(ans,dp[i]);
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}
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if(ans>=INF)
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printf("Case %d: -1\n",kk);
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else printf("Case %d: %d\n",kk,ans);
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}
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return 0;
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}
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