Square Numbers

# 02_lists
# 10_square_numbers
import math

nums_list = [int(item) for item in input().split(" ")]

res_list = []

for num in nums_list:
    if num > 0 and math.sqrt(num) % 1 == 0:
        res_list.append(num)

res_list.sort(reverse=True)
print(" ".join(map(str, res_list)))