# -*- coding: utf-8 -*-
"""
Created on Tue Sep 15 10:51:33 2020

@author: Sim
"""
# binary1.py
num10 = int(input("십진수 입력: "))
num2 = ''
while num10 > 0:
    remainder = num10 % 2
    num10 = num10 // 2
    num2 = str(remainder) + num2
print("십진수 ", num10, "은 이진수 ", num2, "입니다")