using System;

public class Program

{

    public static string GetTriangleType(int p1, int p2, int p3)

    {

        if (p1 <= 0 || p2 <= 0 || p3 <= 0) 

        {

            return "bad inputs";

        }

​

        if(p1==p2 && p2==p3) 

        {  

            return "equilateral";

        }  

        else if(p1==p2 || p1==p3 || p2==p3) 

        {  

            return "isosceles";

        }  

        else 

        {  

            return "scalene";

        }  

    }

    public static void Main(){

        //our test cases 

        //check if its return equilateral

        Console.WriteLine("*******************");

        Console.WriteLine("Is a triangle equilateral with three equal values: " + (GetTriangleType(4, 4, 4) == "equilateral".ToLower()));

        //chcek if its not returning equilateral for two equal valeus

        Console.WriteLine("Is a triangle equilateral with one different value: " + (GetTriangleType(4, 5, 4) == "equilateral".ToLower()));

        //chcek if its not returning equilateral for three different valeus

        Console.WriteLine("Is a triangle equilateral with all different values: " + (GetTriangleType(8, 5, 4) == "equilateral".ToLower()));

        Console.WriteLine("*******************");

        //check if its return  isosceles

        Console.WriteLine("Is a triangle isosceles two equal values: " + (GetTriangleType(4, 4, 3) == "isosceles".ToLower()));

        //check if its not returning isosceles for three different values

        Console.WriteLine("Is a triangle isosceles with all different values: " + (GetTriangleType(4, 2, 3) == "isosceles".ToLower()));

        //check if its not returning isosceles for three equal values

        Console.WriteLine("Is a triangle isosceles with all equal values: " + (GetTriangleType(5, 5, 5) == "isosceles".ToLower()));

        Console.WriteLine("*******************");

        //check if its return scalene

        Console.WriteLine("Is a triangle Scalene: " + (GetTriangleType(4, 3, 2) == "scalene".ToLower()));

        Console.WriteLine("*******************");

        //check if its not returning scalene

        Console.WriteLine("Is a triangle Scalene: " + (GetTriangleType(4, 3, 2) == "scalene".ToLower()));

        Console.WriteLine("*******************");

        // check if it validate the user inputs

        Console.WriteLine(GetTriangleType(-5, 3, 4));

        Console.WriteLine(GetTriangleType(4, -8, 9));

        Console.WriteLine(GetTriangleType(4, 8, -9));

        Console.WriteLine(GetTriangleType(1, 0, 0));

        Console.WriteLine(GetTriangleType(0, 0, 0));

    }

}