[1193] 분수찾기

#include <iostream>
using namespace std;
int main(){
	int num , level =1, sum = 1;
	cin >> num;
	while (sum < num)
	{
		level++;
		sum += level;
	}
	if (level % 2 == 0)
	{
		cout << level - sum + num << "/" << sum - num +1 << endl;
	}
	else if (level % 2 == 1)
	{
		cout << sum - num + 1 << "/" << level - sum + num << endl;
	}
	return 0;
}