@[Stevehim](/user/759274) 第19行挂了，应该是 ```ch[f][l] = ch[x][1 ^ l];```
by Coffins @ 2023-08-31 20:09:43
然后操作3和操作4反了
by Coffins @ 2023-08-31 20:12:12
@[Coffins](/user/615965) sto coffins Orz
by Stevehim @ 2023-08-31 20:37:02