@[Iamcly1](/user/577635)
改成这样就过了
```c
scanf("%d%d%d",&x1,&y1,&w1);
if(w[x1][y1]==w1)continue;
w[x1][y1]=w1;
add(x1,y1);
```
by wangshi @ 2022-07-11 20:36:50
THANKS!
但是。。。不用考虑w[x1][y1]<w1?
by Iamcly1 @ 2022-07-11 20:42:54
@[wangshi](/user/541553)
by Iamcly1 @ 2022-07-12 07:11:19
@[Iamcly1](/user/577635) 这。可能数据水吧
by wangshi @ 2022-07-12 07:39:44
我就这么水过去的，但我真的不会解释为什么。
by wangshi @ 2022-07-12 07:45:33
能去重边就行了
by wangshi @ 2022-07-12 07:47:53
@[wangshi](/user/541553)
还是万分感谢!
by Iamcly1 @ 2022-07-12 10:03:12
@[Iamcly1](/user/577635) 去重和加边分开来写就行了，像这样，可以过
```cpp
for(int i=1;i<=m;i++){
int x1,y1,w1;
scanf("%d%d%d",&x1,&y1,&w1);
if(w[x1][y1]>w1)
w[x1][y1]=w1;
}
for(int i = 1; i <= n; ++i)
for(int j = 1; j <= n; ++j)
if(w[i][j] != 0x3f3f3f3f)
add(i, j);
```
by liugh_ @ 2023-08-28 10:28:56
@[Iamcly1](/user/577635) 但是换成小于等于那就会`WA#9`
by Falling_Sakura @ 2023-09-09 16:43:13