def decim_to_binary(x):
    binary = ''
    y = 1
    power_of_two = 0
    number = x

    while(x / y > 1): # Find the max power of two
        y *= 2
        power_of_two += 1

    while(power_of_two >= 0):
        if(number == 0):
            binary += '0'
        elif(number < 2 ** power_of_two):
            binary += '0'
        elif(number >= 2 ** power_of_two):
            number -= 2 ** power_of_two
            binary += '1'
        power_of_two -= 1
    return binary


question = input("Give decimal number: ")
response = decim_to_binary(question)

print("Decimal number " + str(question) + " is " + response + " in binary numbers.")