Some testcases are failing, please help

import java.io.; import java.util.; import java.text.; import java.math.; import java.util.regex.*;

public class Solution {

public static void main(String[] args) {
 Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int globalNum = num;
     if (num==1) {
            System.out.println("Richard");//always Richard
        }
       while(num!=1){
        if(isPowerOf2(num)){//richard
            int divident = num/2;
            num = divident;
            if(num==1){
                System.out.println("Richard");
            }
        }else {
            while(!isPowerOf2(num)){//louise
                if(num>0){
                     num--;
                }
            }
            int temp = globalNum-num;
            globalNum=temp;
            num=temp;
            if(num==1){
                System.out.println("louise");
            }
        }
    }
  }
    private static boolean isPowerOf2( int n) {
    if (n <= 0) {
        return false;
    }
    return Integer.bitCount(n) == 1;
    }
}