import java.util.concurrent.locks.*;
class BankAccount {
    private double balance = 0.0;
    private String name;
    private Lock account = new  ReentrantLock();
    public BankAccount(String n){name = n;}
   public void deposit(double amt) {
        account.lock();
        try{balance = balance + amt;
        } finally{ account.unlock(); }
     }
      public boolean withdraw(double amt){
         account.lock();
         try{
        	   if (balance>=amt) {
                  balance = balance - amt;
                  return(true);
              }
              else return(false);
          } finally{ account.unlock();}
    }
    public void put() {
         account.lock();
         try{
           System.out.println("Account: "+ name + "   Balance: "+balance);
         }finally{ account.unlock();}
    }

    public boolean transferFrom(BankAccount acct , int amt){
    	  account.lock();
          try{
         	   if (balance>=amt) {

                   return(true);
               }
               else return(false);
           } finally{ account.unlock();}

    }

}