Envío 513

Código

#include <iostream>
#include <vector>

using namespace std;

int main() {
    int N;
    cin >> N;
    vector<long> S(N);
    long sum = 0;
    for (int i = 0; i < N; ++i) {
        int Ai;
        cin >> Ai;
        sum += Ai;
        S[i] = sum;
    }
    int C;
    cin >> C;
    int p;
    int q;
    for (int i = 0; i < C; ++i) {
        cin >> p;
        cin >> q;
        long total = S[q];
        if (p > 0) {
            total -= S[p - 1];
        }
        cout << total << endl;
    }
}