#!/usr/bin/python3
def nextNum(num):
   numStr = str(num)
   nextNum = 0
   for i in numStr:
      nextNum += int(i) ** 2
   return nextNum

def isHappy(num):
   passed = []
   while num not in passed:
      passed.append(num)
      num = nextNum(num)
      if num == 1:
         return True
   return False

for i in range(1, 2000):
   if isHappy(i):
      print(i)