using System;

public class Program{

public static void Main(){

    Console.WriteLine("Enter tuition fee: ");

    double tf = Convert.ToInt32(Console.ReadLine());

    Console.WriteLine();

    Console.WriteLine("Enter mode of payment: ");{

    Console.WriteLine(" [1] cash (10% discount )"); 

    Console.WriteLine(" [2] two payments ( no discount )");

    Console.WriteLine(" [3] three payments ( 5% interest )");

        int mode_Payment = Convert.ToInt32(Console.ReadLine());

    if (mode_Payment == 1){

     Console.WriteLine ("Your tf is: "+ (tf -(tf*.1)) );

    }

      if (mode_Payment == 2){   

      Console.WriteLine ("Your tf is:  {0} " , tf);

​

         if ( mode_Payment == 3){

        Console.WriteLine ("Your tf is: " + ( tf + (tf * .05)) );               

}

        } 

    }}}