import java.util.*;
class  Demo1
{
  public static void main(String[] args)
  {
  int grandTotal=0,subtotal=0;
  Scanner scan = new Scanner(System.in);
  System.out.println("Welcome, please enter your name:");
  String name = scan.nextLine();
  System.out.println("Enter your mobile number:");
  String mobile = scan.next();
  String item ="";
  int price=0;
  char c='y';
  System.out.println("______________________________________________");
  System.out.println("________________ 	Menu    _________________");
  System.out.println("______________________________________________");
  System.out.println("1 	Idly                              	30");
  System.out.println("2 	Dosa                              	50");
  System.out.println("3 	Water bottle                      	20");
  System.out.println("4 	Tea                               	08");
  System.out.println("5 	Coffee                            	10");
  System.out.println("6 	Boost                             	12");
  System.out.println("______________________________________________");
 
  while(c=='y')
  { 
  System.out.println("What do you want to buy? \nEnter the code:");
  int choice = scan.nextInt();
  System.out.println("Can you enter the quantity:");
  int quan = scan.nextInt();
  switch(choice)
  {
  case 1:
  item = "Idly";
  price = 30;
  subtotal = price*quan;
  break;
  case 2:
  item = "Dosa";
  price = 50;
  subtotal = price*quan;
  break;
  case 3:
  item = "Water Bottle";
  price = 20;
  subtotal = price*quan;
  break;
  case 4:
  item = "Tea";
  price = 8;
  subtotal = price*quan;
  break;
  case 5:
  item = "Coffee";
  price = 10;
  subtotal = price*quan;
  break;
  case 6:
  item = "Boost";
  price = 12;
  subtotal = price*quan;
  break;
  default:
  System.out.println("Invalid input!!!");
  break;
  }
  grandTotal += subtotal;
  System.out.println("Do you want to continue(y/n)?");//Y,N,Yes, No, y, n
  c = scan.next().toLowerCase().charAt(0);
  }
  System.out.println(grandTotal);
  }
}