求大佬指点
by liyihan1025 @ 2023-09-27 22:21:51
将friend后边加上bool
by Comars @ 2023-09-27 22:24:32
@[liyihan1025](/user/688247)
```cpp
friend bool operator>(const mapp &A,const mapp &B){
^~~~
```
by Argvchs @ 2023-09-27 22:24:52
@[liyihan1025](https://www.luogu.com.cn/user/688247)
by Comars @ 2023-09-27 22:25:22
@[Argvchs](/user/533270) @[Comars](/user/784856)
谢谢大佬们，AC了
by liyihan1025 @ 2023-09-29 09:40:28