反向边没有反向
by Erusel @ 2019-07-22 18:18:35
@[蒟蒻烟雨平生](/space/show?uid=85682)
by Erusel @ 2019-07-22 18:18:53
@[Robinzh](/space/show?uid=53807) ？抱歉，没有明白
by 绝顶我为峰 @ 2019-07-22 18:19:12
主函数中
```
n=read(),m=read(),s=read(),t=read();
while(m--)
{
int x=read(),y=read(),w=read(),f=read();
add(x,y,w,f);
add(x,y,0,-f);
}
printf("%d %d\n",EK(),cost);
```
应该改为
```
n=read(),m=read(),s=read(),t=read();
while(m--)
{
int x=read(),y=read(),w=read(),f=read();
add(x,y,w,f);
add(y,x,0,-f);
}
printf("%d %d\n",EK(),cost);
```
by Erusel @ 2019-07-22 18:20:32
@[蒟蒻烟雨平生](/space/show?uid=85682)
by Erusel @ 2019-07-22 18:22:51
@[Robinzh](/space/show?uid=53807) 好的，谢谢大佬
by 绝顶我为峰 @ 2019-07-22 18:59:03