可以试试并查集做法呀$\rm QwQ$
by Mr_Spade @ 2018-10-18 14:21:04
大佬们别看了
by Wisbtsml @ 2018-10-18 14:21:06
我知道那里错了
by Wisbtsml @ 2018-10-18 14:21:30
这题线段树~~不~~好吧?
by King_of_gamers @ 2018-10-18 14:21:44
真尴尬
by Wisbtsml @ 2018-10-18 14:21:50
我cao，依然wa
by Wisbtsml @ 2018-10-18 14:23:19
ST表多好啊
by RiverFun @ 2018-10-18 14:23:46
为什么不用st表呢（滑稽
by AstoriaG @ 2018-10-18 14:24:53
```cpp
int main() {
m = read(); mod = read();
build(1, 1, m);
ll mm = m；
while(mm--) {
```
改成这样还是wa怎么办？
by Wisbtsml @ 2018-10-18 14:24:59
啧啧啧
by Wisbtsml @ 2018-10-18 14:29:53