#!/usr/bin/env python3

import argparse

def haps(i1, i2):
 try:
  if (max(i1, i2) / 2 + 7 > min(i1, i2) and max(i1, i2) - min(i1, i2) > 2) or (min(i1, i2) < 14 and (max(i1, i2) - min(i1, i2) > 1) or min(i1, i2) < 12):
   return False
  return True
 except ValueError:
  raise ValueError("Arguments must be integers.")

if __name__ == "__main__":
 parser = argparse.ArgumentParser()
 parser.add_argument("age1", type=int)
 parser.add_argument("age2", type=int)
 args = parser.parse_args()
 if haps(args.age1, args.age2):
  print("Have fun.")
 else:
  print("Nope.")