Submission

Score: 5

User: Bune

Problemset: ผลบวก (กลาง)

Language: cpp

Time: 0.299 second

Submitted On: 2026-02-24 08:11:09

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

#define fastio ios_base::sync_with_stdio(false); cin.tie(nullptr);
#define ll long long
#define pb push_back
#define all(x) (x).begin(), (x).end()

int main() {
  fastio

  int N;
  cin >> N;
  vector<int> v;
  
  for (int i = 0; i < N; i++) {
    int a;
    cin >> a;
    v.pb(a);
  }
  
  int Q;
  cin >> Q;
  
  for (int i = 0; i < Q; i++) {
    int x, y;
    cin >> x >> y;
    int sum = 0;
    for (int j = x; j <= y; j++) {
      sum += v[j];
    }
  
    cout << sum << '\n';
  }


  return 0;
}