是不是精度出问题了
by dry_ @ 2023-11-13 22:42:34
毕竟是小数
by dry_ @ 2023-11-13 22:43:00
话说你就不能在建树的时候就把平均数写好吗...
by dry_ @ 2023-11-18 09:31:34
```cpp
tree[i<<1].val+=tree[i].lazy*(tree[i].r-tree[i].l+1);
tree[i<<1|1].val+=tree[i].lazy*(tree[i].r-tree[i].l+1);
```
要改成
```cpp
ree[i<<1].val+=tree[i].lazy*(tree[i<<1].r-tree[i<<1].l+1);
tree[i<<1|1].val+=tree[i].lazy*(tree[i<<1|1].r-tree[i<<1|1].l+1);
```
by dry_ @ 2023-11-18 09:53:48