백준 8393번 합

 

 

https://www.acmicpc.net/problem/8393

8393번: 합

 

 

 

	#include <iostream>
	using namespace std;
	int main(void)
	{
	int n = 0;
	int sum = 0;
	cin >> n;
	for (int i = 1; i <= n; i++)
	{
	sum += i;
	}
	cout << sum;
	return 0;
	}

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