@[水星湖](/user/974277) 红名大佬解释一下
by steveyang137 @ 2024-07-20 10:58:49
```cpp
if(s<=l&&r<=t) {
seg[p]={k,k,0};
pushdown(p);
return;
}
```
```cpp
if(s<=l&&r<=t) {
pushdown(p);
seg[p].mx+=k;
seg[p].sum_tag+=k;
return;
}
```
里调用pushdown会越界
by taffy_official @ 2024-07-20 11:04:41
线段树不是要开四倍空间吗？
by I_will_AKIOI @ 2024-07-20 11:08:50
@[I_will_AKIOI](/user/565265) 仔细看我的seg开的是maxn<<2
by steveyang137 @ 2024-07-20 18:36:30
@[taffy_official](/user/771357) 有道理。那我特判叶子节点还是怎么
by steveyang137 @ 2024-07-20 18:37:35
@[taffy_official](/user/771357) 我糖了，到位置不用pushdown就行了。多谢！
by steveyang137 @ 2024-07-20 19:30:20