import java.io.DataInputStream;
import java.io.*;
class Lab1
{
        public static void main(String args[]) throws IOException
	{
                DataInputStream in = new DataInputStream(System.in); 
                float discount=0.0f,floatcost,amount=0.0f;
                int item;
                System.out.println("enter the iem\n1.T-shirt 10%\n2.Silk Sari 30%\n 3.Baby suit 40%\n 4.Trousers 15%\n");
                item=Integer.parseInt(in.readLine());
                switch(item)
                 {
		  case 1: System.out.println("enter the cost of tshirt\n");
                          floatcost=Float.valueOf(in.readLine()) .floatValue();
                          discount=(float)0.1*floatcost;
                          amount=floatcost-discount;
                          break;
		  case 2: System.out.println("enter the cost of silksary\n");
                          floatcost=Float.valueOf(in.readLine())  .floatValue();
                          discount=(float)0.30*floatcost;
                          amount=floatcost-discount;
			  break;
		  case 3: System.out.println("enter the cost of babasuit\n");
                          floatcost=Float.valueOf(in.readLine())  .floatValue();
                          discount = (float)0.40* floatcost;
                          amount=floatcost-discount;
			  break;	
		  case 4: System.out.println("enter the cost of trousers\n");
                          floatcost=Float.valueOf(in.readLine())  .floatValue();
                          discount=(float)0.15*floatcost;
                          amount=floatcost-discount;
			  break;
                 default: System.out.println("invalid");
                     
                }
           System.out.println("amount paid is:" + amount);
        }           
 }