import java.math.BigInteger; 

public class Test { 
     
    public static void main(String[] args) { 
        int bitLength = BigInteger.valueOf(0L).bitLength(); 
        int bitCount = BigInteger.valueOf(0L).bitCount(); 
        System.out.println("bitLength=" + bitLength + ", expected: 1"); 
        System.out.println("bitCount=" + bitCount + ", expected: 1"); 
    } 

}