백준 4153

#include <iostream>
#include <math.h>

using namespace std;

int main(void)
{
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	while (1)
	{
		int a, b, c;
		cin >> a >> b >> c;

		if (a == 0 && b == 0 && c == 0)
		{
			break;
		}
		else if (sqrt((a * a + b * b)) == sqrt(c * c) ||
			sqrt((a * a + c * c)) == sqrt(b * b) ||
			sqrt((b * b + c * c)) == sqrt(a * a))
		{
			cout << "right" << "\n";
		}
		else if (sqrt((a * a + b * b)) != sqrt(c * c) ||
			sqrt((a * a + c * c)) != sqrt(b * b) ||
			sqrt((b * b + c * c)) != sqrt(a * a))
		{
			cout << "wrong" << "\n";
		}
	}

	return 0;
}