# The decimal number, 585 = 10010010012 (binary), is palindromic in both bases.
#
# Find the sum of all numbers, less than one million, which are palindromic in base 10 and base 2.
#
# (Please note that the palindromic number, in either base, may not include leading zeros.)


def is_palindrome(x):
    return x == x[::-1]


N = 1000000

print(sum(x for x in range(N) if is_palindrome(str(x)) and is_palindrome("{0:b}".format(x))))