Submission

Score: 100

User: Fifaxmb

Problemset: ผลบวก (ง่าย)

Language: cpp

Time: 0.136 second

Submitted On: 2026-01-03 11:18:39

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

int main(){
    int n;cin >> n;
    vector<int> v(n);
    int h,l;
    for(auto &x:v){
        cin >> x;
    }
    cin >> l >> h;
    int ans =0;  
    for(int i = l ;i <= h;i++){
         ans += v[i];
    }
    
    cout << ans;

}