# 1201.py

def f (x): print x+3
f(7) # 10

def f (x,y): print x+y
f(3,9) # 12

def f (x,y):
  def g (t): return t
  if x==0:
    def g (t): return t*t
  print g(y)

f(1,4) # 4
f(0,4) # 16