i = 1
N = int(input())
while i ** 2 <= N:
    print(i ** 2)
    i += 1

52ed8f6183c1201c36f685b452724c3dde3452ec
<mask token>

<mask token>
while i ** 2 <= N:
    print(i ** 2)
    i += 1

i = 1
N = int(input())
while i ** 2 <= N:
    print(i ** 2)
    i += 1
