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import java.util.Scanner;
public class Main
{
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
Nuts[] nut = new Nuts[4];
for(int i=0; i<nut.length; i++){
int nutId =scan.nextInt();
scan.nextLine();
String nutName = scan.nextLine();
String nutType= scan.nextLine();
double nutamount = scan.nextDouble();
nut[i] = new Nuts(nutId,nutName,nutType,nutamount);
}
int usrnutId = scan.nextInt();
boolean usrRate = scan.nextBoolean();
double result = secondMethod(nut,usrnutId,usrRate);
if(result!=0){
System.out.println(result);
}
}
public static double secondMethod(Nuts[] nut,int usrnutId, boolean usrRate){
double amount =0;
for(int i=0; i<nut.length; i++) {
if(usrRate==true && nut[i].getnutId()==usrnutId)
{
amount = nut[i].getnutamount()*1.25;
}
return amount;
}
return 0;
}
}
class Nuts
{
int nutId;
String nutName;
String nutType;
double nutamount;
boolean usrRate;
Nuts(int nutId,String nutName, String nutType,double nutamount){
this.nutId = nutId;
this.nutName = nutName;
this.nutType = nutType;
this.nutamount = nutamount;
}
public void setnutId(int nutId){
this.nutId = nutId;
}
public int getnutId(){
return nutId;
}
public void setnutName(String nutName){
this.nutName = nutName;
}
public String getnutName(){
return nutName;
}
public void setnutType(String nutType){
this.nutType = nutType;
}
public String getnutType(){
return nutType;
}
public void setnutamount(double nutamount){
this.nutamount = nutamount;
}
public double getnutamount(){
return nutamount;
}
public void setusrRate(boolean usrRate){
this.usrRate = usrRate;
}
public boolean getusrRate(){
return usrRate;
}
}
