using System;

public class Program

{

    public static void Main()

    {

        int age = 0;

        int limit = 18 , max = 60;

        //count males and females

        int males = 0;

        int females = 0;

        //label

        start:

        //Read the age

        Console .WriteLine("type you age: ");

        age = Convert .ToInt32(Console.ReadLine());     

        //if the age is less than limit return to 'start'

         if (age < limit) {

             Console.WriteLine("Age {0} invalid:" , age) ;

                 goto start; //Return to 'start' label 

         }

        else if(age > max){ //If age is greater than 'max' value

            Console.WriteLine("age {0} is greater than {1}",age,max);

            goto start; // Return to 'start' label

         }

        else   // If age is between limit and max is valid

            Console.WriteLine("Age {0} is valid", age);

        readGender:

        Console.WriteLine("Gender (M_Male, F-Female): ");

        string gender = Console.ReadLine();

        switch(gender.ToUpper())

        {

        case "M" :

            males++; 

            break;

        case "F" : 

            females++;

            break;

        default:

            goto readGender;

      }

        Console.WriteLine("Males: {0}, Females: {1}", males, females);

        Console.ReadLine();

        goto start; // Return to start label

   }

}