/*
	Name: penis
*/

import java.util.*;

public class Triangletype {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);

		System.out.println("Enter the sides of Triangle");
		int a = in.nextInt();
		int b = in.nextInt();
		int c = in.nextInt();

		if (a <= 0 || b <= 0 || c <= 0) {
			System.out.println("Invalid Input");

		} else if(  isTriangle ( a, b, c) ) {
			System.out.println("Yes, It's a Triangle");

			String type = GetType(a, b, c);
			System.out.println("Triangle type: " + type);

		} else {
			System.out.println("Not a Triangle");
		}
	}
	//****************************************************
	public static boolean isTriangle(int a , int b, int c ) {
		if (a >= b + c || b >= a + c || c >= a + b) {
			return false;
		} else {
			return true;
		}
	}
	public static String GetType(int a, int b, int c) {
		if (a == b && b == c) { // all equal sides
			return "Equilateral";

		} else if (a == b || b == c) { // most sides are equal with one greater or less than the others
			return "Isosceles";

		// a^2 + b^2 = c^2
		} else if((a * a) + (b * b) == (c * c) || (c * c) + (a * a) == (b * b) || (b * b) + (c * c) == (a * a)) {
			return "Right Angle";

		} else {
			return "Scalene";
		}
	}
}