package domZadanie;
 
import java.io.FileInputStream;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
 
public class DomZadanie {
 
	public static void main(String[] args) throws IOException {
		FileInputStream myfile = new FileInputStream("C:/Users/User/Desktop/const256.txt");
		byte[]b=new byte[256];
		int f=0, c=0;
myfile.read(b);
for(int k=0;k<b.length;k++){
				while(b[k]!=0){
					if(b[k]%2==1){f++;}
					b[k]=(byte)(b[k]/2);
				}
			}
			System.out.println(f);
		}
	}