using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("STUDENT NAME");

        var c = Console.ReadLine();

        Console.WriteLine("age");

        var a = Console.ReadLine();

        Console.WriteLine("year of entry");

        var e = Console.ReadLine();

        var ee = int.Parse(e);

        Console.WriteLine("nationality");

        Console.WriteLine("1=Mexican");

        Console.WriteLine("2=Other");

        var n = Console.ReadLine();

        var nn = int.Parse(n);

        Console.WriteLine("number of subjects");

        var s = Console.ReadLine();

        var ss = int.Parse(s);

        var op = 2019 - ee;

        if (op <= 3 && nn==1)

        {

            var t = ss * 50;

            Console.WriteLine("\nTotal " + t);

        }

        if (op >= 4 && nn==1)

        {

            var t = ss * 30;

                Console.WriteLine("\nTotal " + t);

        }

        if (op <= 3 && nn==2)

        {

            var t = ss * 55;

            Console.WriteLine("\nTotal " + t);

        }

        if (op >= 4 && nn==2)

        {

            var t = ss * 35;

            Console.WriteLine("\nTotal " + t);

        }

       }

}