Submission

Score: 100

User: mungkyskibidi

Problemset: ผลบวก (ง่าย)

Language: cpp

Time: 0.084 second

Submitted On: 2026-04-18 13:04:50

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

int arr[1000000];

int main(){
	int n , sum = 0;
	cin >> n;
	
	for(int i = 1 ; i <= n ; i++) cin >> arr[i];
	
	int a , b;
	cin >> a >> b;
	
	for(int i = a+1 ; i <= b+1; i++ ) sum+=arr[i];
	
	cout << sum;
}