#include <iostream>
#include <cstdio>
using namespace std;

int main()
{
    int n;
    scanf("%d",&n);
    int nr = 0;
    if (n == (1<<5))
        nr++, n=0;
    if (n >= 16)
        nr++, n-=(1<<4);
    if (n >= 8)
        nr++, n-=(1<<3);
    if (n >= 4)
        nr++, n-=(1<<2);
    if (n >= 2)
        nr++, n-=(1<<1);
    if (n >= 1)
        nr++, n-=(1<<0);
    printf("%d",nr);
    return 0;
}