
"""  # ЗАДАЧА A
n = int(input())
i = 1
while i ** 2 <= n:
    print(i ** 2)
    i += 1
"""

"""  # ЗАДАЧА B
n = int(input())
i = 3
while n % i != 0:
    i += 1
print(i)
"""

"""  # ЗАДАЧА C
n = int(input())
x = 1
while x < n:
 print(x)
 x = x*2
"""

"""  # ЗАДАЧА D
n = int(input())
if n & (n - 1):
    print("NO")
else:
    print("YES")
"""


# ЗАДАЧА Е ????






