# POTD 7 skel
# Author: Scott Wehrwein
# Date: 10/20/25
# Description: Count the binary digits in a decimal number

import sys

n = int(sys.argv[1])

if n == 0:
    print(0)
else:
    binary = ""
    while n > 0:
        if n % 2 == 0:
            binary = "0" + binary
        else:
            binary = "1" + binary
        n = n // 2
    print(binary)