function getMaxLessThanK(n, k) {
  let max = 0;
  let s = [];


    max = 0;
    for (let a = 1; a <= n; a++) {
      s.push(a);
      for (let b = a + 1; b <= n; b++) {
        let bit = a & b;
        if (bit < k && bit > max) {
          max = bit;
        }
      }
    }
  return max;
}