#include<bits/stdc++.h>
using namespace std;
int n,m,a[100001],b[100001],l,r;
int main(){
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        b[i]=a[i]+b[i-1]; 
        cout<<b[i]<<" "; 
    } 
    while(m--){
        cin>>l>>r;
        cout<<b[r]-b[l-1]<<endl;
    }
  
  
}
/**************************************************************
	Problem: 2060
	User: wangyichen2
	Language: C++
	Result: Output Limit Exceed
****************************************************************/