#include<iostream> using namespace std; int main(){ int n,q; int a[100010]; while(cin>>n>>q){ a[0]=0; for(int i=1;i<=n;i++){ cin>>a[i]; a[i]+=a[i-1]; } while(q--){ int l,r; cin>>l>>r; cout<<a[r]-a[l-1]<<endl; } } } |
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