建议在主函数内加一行
```C++
memset(hf, 0, sizeof(hf));
```
28,29行，正下方应该是y+1,不是x+1，应改为
```C++
hf[x][y+1]=cnt;
y++;
```
by chenqile @ 2023-12-03 12:35:17
好像28，29行没搞反
by chenqile @ 2023-12-03 12:38:56
thanks
by xkdd @ 2023-12-03 13:34:12