Show the output of the following code:

#include

using namespace std;

class A

$\{$

public:

int x;

int y;

int z;

A$()$: x$(1),$ y$(2),$ z$(3)$

$\{$

$\}$

$\}$;

int main$()$

$\{$

A a;

A$*$ p$1=$ &a;

a$.$x $=2$;

A a$1$;

p$1=$ &a$1$;

cout $<<$ p$1->$x $<<""<<(*$p$1).$y $<<""<<$ p$1->$z;

return $0$;

$\}$

$111$

$112$

$123$

$222$

$333$