class A$()$:

x $=1$

def $\_\_$init$\_\_($self$,$ n$)$:

self.y $=$ n

A$.$x $+=1$

def p$($self$)$:

print$($self$.$y$)$

self.y $+=3$

self.r$()$

def r$($self$)$:

self.y $+=2$

print$($self$.$y$)$

class B$($A$)$:

x $=10$

def $\_\_$init$\_\_($self$,$ n$)$:

super$().\_\_$init$\_\_($n$)$

sum $=$ self.y $+$ B$.$x

self.m $=$ sum

def r$($self$)$:

self.y $+=$ self.x

print$($self$.$m$)$

a $=$ A$(1)$

b $=$ B$(2)$

a$.$p$()$

b$.$p$()$

global variable is created on line