Submission

Score: 100

User: samsenpisardmoo

Problemset: ผลบวก (ง่าย)

Language: cpp

Time: 0.084 second

Submitted On: 2025-10-13 11:30:49

#include <bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	cin >> n;
	int arr[n];
	
	for(int i=0; i<n; i++) cin >> arr[i];
	int x,y;
	cin >> x >> y;
	int sum=0;
	for(int i=x; i<=y; i++) sum+=arr[i];
	cout << sum; 
}