class ATM $\{$

private:

int balance;

int atm$\_$balance;

public:

ATM$($int initial$\_$balance $=500)$ : balance$($initial$\_$balance$),$ atm$\_$balance$($initial$\_$balance$)\{\}$

bool dispense$($int amount$)\{$

if $($balance $>=$ amount && atm$\_$balance $>=$ amount$)\{$

balance $-=$ amount;

atm$\_$balance $-=$ amount;

return true;

$\}$