class QuestionFive
{
	static int max(int i, int j, int k){

		if(i>=j&& i>=k)
			return i;
		else if(j>=k && j>=i)
			return j;
		else return k;
	}

	static int sumSmall(int i, int j, int k){
		return max(i,j,k);
		if(max(i,j,k)==i)
			return j+k;
		else if(max(i,j,k)==j)
			return i+k;
		else return k;
	}


	static String triangleType(int s1, int s2, int s3){
		if(s1==s2&&s2==s3){
			return "equilateral";
		}
		else if(s1==s2||s2==s3){
			return "isosceles";
		}
		else return "scalene";
	}
		static String isTriangle(i,j,k){
			if(max(i,j,k)<sumSmall(i,j,k)){
				return "is a triangle";
			}
			else return "not a triangle!";
		}


	public static void main(String [] args)
	{
		System.out.println("Enter 3 positive values");
		int i=Console.readInt();
		int j=Console.readInt();
		int k=Console.readInt();
		System.out.println(triangleType(i,j,k));
		System.out.println(isTriangle(i,j,k));
	}
}