using System;

    public class Program

    {

    public static void Main()

    { 

        float a;

        float b;

        float c;

        Console.WriteLine("numeroa : "); 

          a= float.Parse(Console.ReadLine()); 

        Console.WriteLine("numerob : "); 

          b= float.Parse(Console.ReadLine()); 

        Console.WriteLine("numeroc : "); 

          c= float.Parse(Console.ReadLine());

        if(a>b){

            if (a>c){

            Console.WriteLine("el mayor es a"+a); 

            } else{

            Console.WriteLine("el mayor es c"+c); 

            }

        } else{

    if(c>b){

    Console.WriteLine("el mayor es c"+c);

    } else{

    Console.WriteLine("el mayor es b"+b);

    }

         }

      }

    }