#include <stdio.h>
#include <conio.h>

int main()
{
	float a, b, c;
	scanf("%f%f%f", &a, &b, &c);
	if (a >= b + c || b >= a + c || c >= b + a)
	{
		printf("Ne treugol");
		getch();
		return 0;
	}
	else
		if (a * a == b * b + c * c || b * b == a * a + c * c || c * c == b * b + a * a)
			printf("pryamougol");
		else
			if (a * a > b * b + c * c || b * b > a * a + c * c || c * c > b * b + a * a)
				printf("tupoygol");
			else
				printf("ostrougol");
	getch();
	return 0;
}