Submission

Score: 100

User: karnsinee

Problemset: ผลบวก (ง่าย)

Language: cpp

Time: 0.085 second

Submitted On: 2025-09-21 18:12:05

#include<iostream>
#include<algorithm>
using namespace std;
int main(){
	int n;
	cin>>n;
	int a[n+5],x,y,sum;
	sum=0;
	for(int i=0;i<n;i++){
		cin>>a[i];
	}
	
	cin>>x>>y;
	for(int i=0;i<n;i++){
		if(i>=x&&i<=y){
			sum=sum+a[i];
		}
	}
	cout<<sum;


}