把
```
for(i=1;i<=m;i++)
{
scanf("%d%d%d",&bian[i].start,&bian[i].to,&bian[i].val);
f[i]=i;
}
```
改成
```
for(i=1;i<=n;i++) f[i]=i;
for(i=1;i<=m;i++)
scanf("%d%d%d",&bian[i].start,&bian[i].to,&bian[i].val);
```
by lrj124 @ 2018-05-27 09:24:42
@[哥66666](/space/show?uid=58556)
by lrj124 @ 2018-05-27 09:44:46
lrj!!!
by star_magic_young @ 2018-05-27 10:22:56
哦，谢谢了
by 哥66666 @ 2018-05-27 13:45:35
刘汝佳！！！
by yqh123 @ 2018-07-03 20:47:10