using System;               

public class PROGRAMA3

{

public static void Main()

{

//ALMA ESMERALDA GARCIA GAMEZ//

int NP,NB,NPO;

double TAP;

TAP=0;

Console.Write("Num de platillos ");

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

Console.Write("Num. de bebidas ");

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

Console.Write("Num. de postres ");

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

TAP=(NP*40)+(NB*10)+(NPO*20);

if (NP > 3)

TAP=TAP*0.90;

Console.WriteLine ("Total a pagar " +TAP);

}

}