//An Evil number is a positive whole number which has even number of 1's in its binary equivalent.
import java.util.*;
class evil
{//class evil opens
public static void main(String[]args)
{//main method opens
Scanner sc=new Scanner(System.in);
System.out.println("Enter a no");
int n=sc.nextInt();//variable n to accept the no
int r=0,c=0;//variable r to extract the digits,variable c to count the no of 1s present in the binary notation
while(n>0)//10>0t//5>0t//2>0t//1>0t//0>0false
{
r=n%2;//0//1//0//1
if(r==1)//f//t//f//t
c=c+1;//0//1//2
n=n/2;//10/2=5//5/2=2//2/2=1//1/2=0
}
if(c%2==0)//2%2==0 true
System.out.println("It is an evil no");
else
System.out.println("It is not an evil no");
}//main method closes
}//class closes
