import java.util.*;
public class Telecart50 {
private int unites=50;
public int getUnites(){return unites;}
public void debitesUnites(int m){unites=unites-m;}
public static void main(String[] args){
String reponse;
char c;
int csm;
Telecart50 t=new Telecart50();
System.out.println("Vouley vous telephone?");
Scanner cfm=new Scanner(System.in);
reponse=cfm.nextLine();
c=reponse.charAt(0);
if(c=='o'){System.out.println("nbr d'unites a consommer:");
csm=cfm.nextInt();
if(csm<=t.getUnites()){t.debitesUnites(csm);}
else{System.out.println("solde insuffisn");}}
else{
System.out.println("vous ne vouley pas");}
System.out.println("le nembre d'unite restante est :"+t.getUnites());
}
}