public static int bitwiseAnd(int N, int K) {
        int max = Integer.MIN_VALUE;
        for(int i=1;i<=N;i++){
            for(int j=i+1;j<=N;j++){
                int result = i&j;
                if(result < K && result > max) {
                    max = result;
                }
            }
        }
        return max;
    }