#include<stdio.h>
int main()
{
    long long int t1,t2,i,m,n,j;
    scanf("%lld",&t1);
    long long int a[t1],b[t1];
    b[0]=0;
    for(i=0;i<n;i++)
    {
        scanf("%lld",&a[i]);
        if(i==0)
            b[i]=b[i]+a[i];
        else
            b[i]=b[i-1]+a[i];
        //printf("%lld\n",b[i]);
    }
    scanf("%lld",&t2);
    for(j=1;j<=t2;j++)
    {
        scanf("%lld%lld",&m,&n);
        if(m==0)
            printf("%lld\n",b[n]);
       // else if(n==0)
            //printf("%lld\n",b[m]);
        //else if(m==n)
            //printf("%lld\n",b[m]);
        else
            printf("%lld\n",b[n]-b[m-1]);

    }
    return 0;


}