口头不好解释,可以参考可能的hack数据:
```
3 3 0
0 N 5 Y 0 N
0 N 5 Y 0 N
0 N 2 Y 0 N
```
by sipu6174 @ 2020-12-04 09:10:05
@[jiangyanheng](/user/68884)
by sipu6174 @ 2020-12-04 09:12:10
这个答案是0吗?
by jiangyanheng @ 2020-12-04 09:14:10
@[sipu6174](/user/239832) ?
by jiangyanheng @ 2020-12-04 09:14:52
是的,你对了?
by sipu6174 @ 2020-12-04 09:14:58
@[sipu6174](/user/239832)
~~然而并没有~~
这样的话,特判掉0的会怎样?
by jiangyanheng @ 2020-12-04 11:49:29
@[jiangyanheng](/user/68884)
你觉得呢?
```
3 3 1
0 N 5 Y 0 N
0 N 5 Y 0 N
0 N 2 N 0 N
```
by sipu6174 @ 2020-12-04 14:58:54
@[sipu6174](/user/239832)
感谢大佬,我悟了
by jiangyanheng @ 2020-12-04 19:23:35