HDU 4349

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 1 #include<iostream>

 2 #include<cstdio>

 3 using namespace std;

 4 

 5 int main()

 6 {

 7     int n;

 8     while (scanf("%d",&n) != EOF) {

 9          int cnt(0);

10          while (n) {

11                cnt += (n&1);

12                n >>= 1;      

13          }     

14          printf("%d\n",(1<<cnt));

15     }

16     return 0;

17 }