Envío 535

Código

#include <iostream>
#include <vector>
using namespace std;

vector<int> processLine(int N) {
  int e;
  vector<int> sum(N);
  cin >> e;
  sum[0] = e;
  for (int i = 1; i < N; i++) {
    cin >> e;
    sum[i] += sum[i-1] + e;
  }
  return sum;
}                   

int main() {
  int N, C, from, to, sum;
  vector<int> elements;
  cin >> N;
  elements = processLine(N);
  cin >> C;
  for (int i = 0; i < C; i++) {
    cin >> from;
    cin >> to;
    sum = elements[to];
    if (from - 1 >= 0) sum -= elements[from - 1];
    cout << sum << endl;
  }
}