题解 | #查找输入整数二进制中1的个数#
查找输入整数二进制中1的个数
https://www.nowcoder.com/practice/1b46eb4cf3fa49b9965ac3c2c1caf5ad
import sys
for line in sys.stdin:
a = int(line.strip())
count1 = 0
for i in bin(a)[2:]:
if i == '1':
count1 +=1
print(count1)
