using System;

public class Program

{

    public static void Main()

    {

        int subj,reg,fore,age,year,nation,total,r;

        string name;

        Console.WriteLine("Chichipaneca University");

        Console.WriteLine("What´s youre name?");

        name = Console.ReadLine();

        Console.WriteLine("How old are you age?");

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

        Console.WriteLine("Were are you from?");

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

        Console.WriteLine("At what year did you enter to school?");

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

        Console.WriteLine("How many subjets are you going to course?");

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

        if(year>2015 && nation==1){

            total=subj*50;

            Console.WriteLine("The total charge to pay is:{0}",total);

        }else if(year<=2015 && nation==1){

            r=subj*5;

            total=r+(subj*30);

            Console.WriteLine("The total charge is to pay: {0}",total);

        }else if(year<=2015){

            total=(subj*30);

            Console.WriteLine("The total charge is to pay: {0}",total);

        }

    }

}