#41552: python 當你不知道有內置函數,直接硬上的解


sam851015@gmail.com (多挖鼻孔有益身心健康)


github彩色好讀版:點我
作答完,看別人的答案後,我覺得我是小丑

while True:
try:
num_in = int(input())
except:
break
num_out = ''
while num_in != 0:
remain = num_in % 2
num_in = num_in // 2
num_out += str(remain)
print(num_out[::-1])