#include<stdio.h> void main(){ int n,q; while(scanf("%d%d",&n,&q)!=EOF){ int l,r,a[100010]; a[0]=0; for(int i=1;i<=n;i++){ scanf("%d",&a[i]); a[i]+=a[i-1]; } while(q--){ scanf("%d%d",&l,&r); printf("%d\n",a[r]-a[l]); } } } |
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