Envío 6971

Código

#include <iostream>

using namespace std;

void solve (int s[], int p, int q);

int main() {
    int n;
    cin >> n;
    int a[n];
    int s[n];
    int sum = 0;

    for (int i = 0; i < n; i++) {
        cin >> a[i];
        sum += a[i];
        s[i] = sum;
    }
    
    int c;
    cin >> c;

    for (int i = 0; i < c; i++) {
        int p, q;
        cin >> p >> q;
        solve(s, p, q);
    }
    
    return 0;
}

void solve (int s[], int p, int q) {
    if (p == 0) {
        cout << s[q] << endl;
    } else {
        cout << s[q] - s[p-1] << endl;
    }
}