yjy_echo @ 2024-04-18 16:36:10
#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int N=1e5+5;
int n,m,a,x,y,k,ans[N];
struct edge{
int l,r;
ll sum;
ll lz;
}e[N<<2];
inline ll ls(ll x){
return x<<1;
}
inline ll rs(ll x){
return x<<1|1;
}
void build(int k,int l,int r){
e[k].l=l;
e[k].r=r;
if(l==r){
e[l].sum=ans[l];
return;
}
int mid=(l+r)/2;
build(ls(k),l,mid);
build(rs(k),mid+1,r);
e[k].sum=e[k*2].sum+e[k*2+1].sum;
}
void pushdown(int u){
e[u*2].lz+=e[u].lz;
e[u*2+1].lz+=e[u].lz;
e[u*2].sum=e[u].lz*(e[u*2].r-e[u*2].l+1);
e[u*2+1].sum=e[u].lz*(e[u*2+1].r-e[u*2+1].l+1);
e[u].lz=0;
}
void pushup(int u){
e[u].sum=e[u*2].sum+e[u*2+1].sum;
}
void update(int l,int r,int u,int x)
{
if(e[u].r==0||e[u].l==0) return;
if(l<=e[u].l&&e[u].r<=r){
e[u].lz+=x;
e[u].sum+=x*(e[u].r-e[u].l+1);
return;
}
int mid=(e[u].r+e[u].l)>>1;
pushdown(u);
if(l<=mid) update(l,r,u*2,x);
if(r>mid) update(l,r,u*2+1,x);
pushup(u);
}
int query(int u,int l,int r,int nl,int nr){
ll res=0;
if(e[u].l>r||e[u].r<l) return 0;
if(e[u].l>=l&&e[u].r<=r) return e[u].sum;
int mid=(nl+nr)>>1;
pushdown(u);
if(l<=mid) res+=query(ls(u),l,r,nl,mid);
if(y>mid) res+=query(rs(u),l,r,mid+1,nr);
}
int main(){
scanf("%d%d",&n,&m);
for(int i=1;i<=n;i++) scanf("%d",&ans[i]);
build(1,1,n);
for(int i=1;i<=m;i++){
scanf("%d",&a);
if(a==1){
scanf("%d%d%d",&x,&y,&k);
update(x,y,1,k);
}
else{
scanf("%d%d",&x,&y);
printf("%lld\n",query(1,x,y,1,n));
}
}
return 0;
}
by xuhaotian @ 2024-04-18 16:41:42
@yangjingyao2011 query 没有返回值
by xuhaotian @ 2024-04-18 16:44:33
pushdown
的sum更新时改为+
by yjy_echo @ 2024-04-18 16:47:43
@xuhaotian 输出3,5,11,还是不对
by xuhaotian @ 2024-04-18 16:48:43
你的build中e[l].sum=ans[l];
应该为
e[k].sum=ans[l];
by xuhaotian @ 2024-04-18 16:49:00
@yangjingyao2011 这下就对了
by xuhaotian @ 2024-04-18 16:51:08
还要开long long
by xuhaotian @ 2024-04-18 16:52:48
你query返回值是int
by yjy_echo @ 2024-04-18 16:53:00
@xuhaotian 感谢,已过
by yjy_echo @ 2024-04-18 16:53:36
@yangjingyao2011 此帖结