@[f_hxr_](/user/754467)
**警钟再敲烂**（覆盖为零代码）：
```cpp
if (lazy[rt] == 1) tr[rt << 1] = tr[rt << 1 | 1] = 0;
```
然而我写的：
```cpp
if (lazy[rt] == 1) tr[rt << 1] = tr[rt << 1 | 1] == 0;
```
只得了$10$ 分 T_T
by God_Demon @ 2024-03-22 19:25:22