http://noi.openjudge.cn/ch0113/30/
#includeusing namespace std; int main() { int n,s=0; cin>>n; while(n>0) { s+=n%2; n/=2; } cout<

http://noi.openjudge.cn/ch0113/30/
#includeusing namespace std; int main() { int n,s=0; cin>>n; while(n>0) { s+=n%2; n/=2; } cout<