백준 8393 c++

#include <iostream>
using namespace std;

int main(void)
{
	int n = 0;
	int result = 0;

	cin >> n;
	if (n >= 1 && n <= 10000)
	{
		for (int i = 1; i <= n; i++)
		{
			result = result + i;
		}
	}
	else
	{
		;
	}
	
	cout << result << endl;

	return 0;
}