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最短路

Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 32036    Accepted Submission(s): 13893

2 1
1 2 3
3 3
1 2 5
2 3 5
3 1 2
0 0

3
2

#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<queue>
using namespace std;
int Road[110][110],n, fz[110];
struct node
{
    int s,l;
};
int dfs()
{
    int min1=1000000;
    memset(fz,0,sizeof fz);
    node a,b;
    a.s=1;
    a.l=0;
    fz[1]=0;
    queue<node>q;
    q.push(a);
    while(!q.empty())
    {
        a=q.front();
        q.pop();
        for(int i=2;i<=n;i++)
        {
            b.s=i;
            b.l=a.l+Road[a.s][i];
            if(Road[a.s][i]!=0&&(fz[i]==0||fz[i]>b.l))
            {
                fz[i]=b.l;
                if(b.s==n&&min1>b.l)
                {
                  min1=b.l;
                }
                q.push(b);
            }
        }
    }
    return min1;
}
int main()
{
    int m;
    while(scanf("%d%d",&n,&m)!=EOF)
    {
        int i,a,b,c;
        if(n==0&&m==0)break;
        memset(Road,0,sizeof Road);
        for(i=0;i<m;i++)
           {
               scanf("%d%d%d",&a,&b,&c);
                Road[a][b]=c;
                Road[b][a]=c;
           }
        printf("%d\n",dfs());
    }
    return 0;
}

HDU2544最短路,布布扣,bubuko.com

HDU2544最短路

标签：des   style   color   java   os   io   strong   数据   

原文地址：http://blog.csdn.net/fljssj/article/details/38518411