Submission

Score: 100

User: 666whynot

Problemset: ผลบวก (ง่าย)

Language: cpp

Time: 0.149 second

Submitted On: 2025-05-29 13:59:49

#include <bits/stdc++.h>
using namespace std;

int main(){
  int n;
  cin >> n;
  vector<int> a(n);
  for(int i=0;i<a.size();i++){
      cin >> a[i];
  }
  int x,y;
  cin >> x >> y;
  int sum = 0;
  for(int i=x;i<=y;i++){
     sum += a[i];
  }
  cout << sum;
}