@[panda_2134](/space/show?uid=23865) help！！！
by Mosklia @ 2018-04-20 10:51:11
好吧， 自己写错了
```cpp
for(int i = 1; i <= m; ++i) fa[i] = i;
```
写错了， 应该是
```cpp
i <= n;
```
。。。。。。。。。。。。
by Mosklia @ 2018-04-20 10:57:31
...
by panda_2134 @ 2018-04-20 11:14:13