```cpp
#include<bits/stdc++.h>
#include<queue>
#define lc p<<1
#define rc p<<1|1
using namespace std;
inline void read(int &x)
{
x=0;int k=1; char c=getchar();
while(c<'0'||c>'9'){if(c=='-')k=-1;c=getchar();}
while(c>='0'&&c<='9')x=(x<<3)+(x<<1)+(c^48),c=getchar();
x*=k;
}//快读
struct tree{
int sum,tag;
}a[1000001];
int data[1000001];
void push_up(int p){
a[p].sum=a[lc].sum+a[rc].sum;
}
void push_down(int p,int l,int r){
if(!a[p].tag)return;
int mid=(l+r)>>1;
a[lc].tag+=a[p].tag;
a[rc].tag+=a[p].tag;
a[lc].sum+=(mid-l+1)*a[p].tag;
a[rc].sum+=(r-mid)*a[p].tag;
a[p].tag=0;
}
void build(int p,int l,int r){
if(l==r){a[p].sum=data[l];return;}
int mid=(l+r)>>1;
build(lc,l,mid);
build(rc,mid+1,r);
push_up(p);
}
void add(int p,int l,int r,int L,int R,int k){
if(l>=L&&r<=R){a[p].sum+=(r-l+1)*k;a[p].tag+=k;return;}
push_down(p,l,r);
int mid=(l+r)>>1;
if(L<=mid)add(lc,l,mid,L,R,k);
if(R>mid)add(rc,mid+1,r,L,R,k);
push_up(p);
}
int query(int p,int l,int r,int L,int R){
if(l>=L&&r<=R)return a[p].sum;
push_down(p,l,r);
int mid=(l+r)>>1,ans=0;
if(L<=mid)ans+=query(lc,l,mid,L,R);
if(R>mid)ans+=query(rc,mid+1,r,L,R);
return ans;
}
int main(){
int n,m;
int q;
read(n);read(m);
for(long long i=1;i<=n;i++)
read(data[i]);
build(1,1,n);
while(m--){
read(q);
if(q==1) {
int x,y,k;
read(x);read(y);read(k);
add(1,1,n,x,y,k);
}
else{
int x,y;
read(x);read(y);
cout<<query(1,1,n,x,y)<<endl;
}
}
return 0;
}
```
by _zby_ @ 2019-08-14 09:23:08
@[_zby_](/space/show?uid=64977) Orz
by hewo @ 2019-08-14 09:23:59
@[_zyx_](/space/show?uid=64976) 你不是要写作业吗qwq
by _zby_ @ 2019-08-14 09:25:18
~~树状数组~~
by 塔罗兰 @ 2019-08-14 09:25:33
@[塔罗兰](/space/show?uid=111741) ~~巧了，我用树状数组没炸过了~~
by hewo @ 2019-08-14 09:26:54
@几个人
@[__QL__](/space/show?uid=108402) @[Xecades](/space/show?uid=64434) @[_hyc_](/space/show?uid=144821)
by hewo @ 2019-08-14 09:29:12
@[_zyx_](/space/show?uid=64976) Orz
by __QL__ @ 2019-08-14 09:30:12
我不会线段树stO
by __QL__ @ 2019-08-14 09:30:50
@[_zyx_](/space/show?uid=64976) pushdown时lazytag没清0
by __QL__ @ 2019-08-14 09:32:11
@[__QL__](/space/show?uid=108402) 一@就出来 6666
你整日整夜地玩（雾）洛谷吗
by hewo @ 2019-08-14 09:32:20