Submission

Score: 100

User: singtoppy

Problemset: ผลบวก (ง่าย)

Language: cpp

Time: 0.113 second

Submitted On: 2026-01-01 17:33:37

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

int main() {
	int n;
	cin >> n;
	vector<int> p(n + 1);
	p[0] = 0;
	for(int i = 1; i <= n; i++) {
		int t;
		cin >> t;
		p[i] = p[i - 1] + t;
	}
	int a, b;
	cin >> a >> b;
	cout << p[b + 1] - p[a];
	return 0;
}