seed 没取模。
n=2时会奇妙RE。
by Chinese_zjc_ @ 2021-12-02 19:29:34
小纠正,rnd应该是这样:
```cpp
ll rnd(){
ll ret=seed;
seed=(seed*7+13)%(1000000007);
return ret%(1000000007);
}
```
by Zvelig1205 @ 2022-05-08 09:47:52
感谢 orz
by 丙戌年 @ 2022-08-22 20:00:59
感谢 orz
by zerc @ 2022-08-23 22:23:08