using System;

namespace MyCompiler {
    class Program {
        public static void Main(string[] args) {
            Console.WriteLine("digite 3 valores de sua escolha para os lados de um triangulo: ");
            double L1 = Convert.ToDouble(Console.ReadLine());
            double L2 = Convert.ToDouble(Console.ReadLine());
            double L3 = Convert.ToDouble(Console.ReadLine());
            if(L1 == L2 && L1 == L3 && L2 == L3){
                Console.WriteLine("triangulo equilatero");
            }
            else{
              if(L1 == L2 && L1 != L3 && L2 != L3){
                 Console.WriteLine("triangulo isoceles");    
            }
           else{
              if(L1 == L3 && L1 != L2 && L2 != L3){
                 Console.WriteLine("triangulo isoceles");    
            }
                else{
                  Console.WriteLine("triangulo escaleno");       
                }
            }
        }
    }
    }

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