```cpp
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
cnt++;
}
}
```
这里cnt = n * n
by jie_xusheng @ 2024-04-02 19:20:47
a数组可能会越界(x,y为负)
by jie_xusheng @ 2024-04-02 19:22:39