@[我是个sb](/user/384821)
```
swap(u[t].val,col[u[t--].pos]);
```
函数的传参顺序是不确定的，你这是个ub
by hjxhjx @ 2022-02-08 21:42:41
@[hjxhjx](/user/178480) 已经A了，谢谢大佬！
by Chano_sb @ 2022-02-09 06:08:27
此帖已结
by Chano_sb @ 2022-02-09 06:08:50