#include<bits/stdc++.h>
using namespace std;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int N, Q;
cin >>N;
vector<int> C(N);
for(int i=0; i<N; i++) cin >>C[i];
vector<long long> pSum(N+1);
for(int i=0; i<N; i++) pSum[i+1]=pSum[i]+C[i];
cin >>Q;
vector<int> ans(Q);
for(int query=0; query<Q; query++){
int a, b;
cin >>a >>b;
map<long long, bool> hasAppeared;
hasAppeared[pSum[a-1]]=true;
int currAns=0;
for(int i=a; i<=b; i++){
if(hasAppeared[pSum[i]]){
currAns++;
hasAppeared.clear();
}
hasAppeared[pSum[i]]=true;
}
ans[query]=currAns;
}
for(int i : ans) cout <<i <<'\n';
}
