new_contents: import time
  def f(n):
      if n%2==1 and n>1:
          return f(3*n+1)+1
      elif n%2==0:
          return f(n/2)+1
      return 1
  m,value=0,0
  begin=time.time()
  for i in range(1,1000000):
      tmp=f(i)
      if tmp>m:
          value=i
          m=tmp
  print time.time()-begin
  print m,value
  
subject: Create Problem14.py