public class Bank {

	private final double[] accounts;
	
	public Bank(int n, double initialBalance){
		accounts = new double[n];
		for(int i=0; i < accounts.length; i++)
			accounts[i] = initialBalance;
	}
	
	// prebacuje novac sa jednog racuna na drugi

	public void transfer(int from, int to, double amount){
		if(accounts[from]<amount)
			return;
		System.out.print(Thread.currentThread());
		accounts[from] -= amount;
		System.out.printf(" %10.2f from %d to %d", amount, from, to);
		accounts[to] += amount;
		System.out.printf(" Total Balance: %10.2f%n", getTotalBalance());
	}
	
	// vraca sumu stanja na svim racunima
	public double getTotalBalance(){
		double sum = 0;
		for(double a: accounts)
			sum += a;
		return sum;
	}
	
	// vraca broj racuna u banci
	public int size(){
		return accounts.length;
	}
}