标签:des style blog http io ar color os sp
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#include<stdio.h> #include<string.h> #include<algorithm> using namespace std; #define M 1000000 #define N 1005 int dij[N],road[N][N],s[N],cost[N][N],pay[N]; int i,j,k; void Dij(int start,int n) { int pos,v,ans; memset(s,0,sizeof(s)); memset(pay,0,sizeof(pay)); for(i=1;i<=n;i++) { dij[i]=road[start][i]; pay[i]=cost[start][i]; } dij[start]=0; pay[start]=0; s[start]=1; for(i=1;i<=n;i++) { pos=M; for(j=1;j<=n;j++) { if(!s[j]&&(dij[j]<pos)) { pos=dij[j]; v=j; } } s[v]=1; for(k=1;k<=n;k++) { if(!s[k]&&(dij[k]>(dij[v]+road[v][k]))) { dij[k]=dij[v]+road[v][k]; pay[k]=pay[v]+cost[v][k]; } else if(!s[k]&&(dij[k]==(dij[v]+road[v][k])&&(pay[k]>pay[v]+cost[v][k]))) pay[k]=pay[v]+cost[v][k]; } } } int main() { int n,m,start,end,a,b,d,t; while(scanf("%d%d",&n,&m)&&(n+m)) { for(i=1;i<=n;i++) //这里如果改成i<=N;则会超时!!! { for(j=1;j<=n;j++) if(i==j) { road[i][j]=0; cost[i][j]=0; } else { road[i][j]=road[j][i]=M; cost[i][j]=cost[j][i]=M; } } for(i=1;i<=m;i++) { scanf("%d%d%d%d",&a,&b,&d,&t); if(d<road[a][b]){ //如果改成if(d<M)就一直WA! road[a][b]=road[b][a]=d; cost[a][b]=cost[b][a]=t;} } scanf("%d%d",&start,&end); Dij(start,n); printf("%d %d\n",dij[end],pay[end]); } return 0; }
标签:des style blog http io ar color os sp
原文地址:http://blog.csdn.net/hdd871532887/article/details/41392471