Submission

Score: 100

User: cyblox_boi

Problemset: ผลบวก (ง่าย)

Language: cpp

Time: 0.034 second

Submitted On: 2025-10-23 22:25:35

#include <iostream>
#include <numeric>
#include <vector>
using namespace std;

int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	int n;
	cin >> n;

	vector<int> numbers(n);

	for (int i = 0; i < n; i++) {
		cin >> numbers[i];
	}

	int x, y;
	cin >> x >> y;

	cout << accumulate(numbers.begin() + x, numbers.begin() + y + 1, 0) << '\n';

	return 0;
}