Submission

Score: 100

User: samsenpisardmoo

Problemset: ผลบวก (กลาง)

Language: cpp

Time: 0.089 second

Submitted On: 2025-10-13 11:39:33

#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 quicksum[n];
	quicksum[0] = arr[0];
	
	for(int i=1; i<n; i++)
	{
		quicksum[i] = quicksum[i-1]+arr[i];	
	}
	
	int m;
	cin >> m;
	
	int r[m][2];
	
	for(int i=0; i<m; i++) cin >> r[i][0] >> r[i][1];
	for(int i=0; i<m; i++) cout << quicksum[r[i][1]] - quicksum[r[i][0]-1] << "\n";
}