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
http://www.nowcoder.com/practice/1b46eb4cf3fa49b9965ac3c2c1caf5ad
import sys
while True:
try:
n=bin(int(input()))
a=0
for i in n:
if i=='1':
a+=1
print(a)
except:
break