/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
interface A{
int a(int s);
}
{
A a = s->{int c=0;for(;s!=0;c++)s&=s-1;return c;};
System.
out.
println(a.
a(1337)); }
}
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