#include <stdio.h>
#include <math.h>
 
int main() {
double a, b, c;
scanf("%lf %lf %lf", &a, &b, &c);
	if (a<=b+c && b<=a+c && c<=b+a)
	{
		if (a==b+c || b==c+a || c==a+b || a==0 || b==0 || c==0)
			printf("Треугольник нулевой площади");
	  	else if (a==b && b==c && c==a)
			printf("Равносторонний"); 
	  	else if (a==b ^ b==c ^ c==a)
			printf("Равнобедренный");
	  	else printf("Разносторонний");
	}
	else printf("Не треугольник");
 return 0;
}

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