import random

당첨자수 = 3
후보 = "cljg918, woo7739, sinnanda2627, greenjuice, nand, cheolwoo-kim, jhyun6913.park, danbain, coffeenut, floridasnail, zenigame, uksama, lws, woolgom, jbp"

lotteryBox = 후보.split(',')
random.shuffle(lotteryBox)

for i in range(0,당첨자수):
  print(lotteryBox[i])