function sameBST(arr1, arr2) {

  if (arr1.length !== arr2.length) return false;
  if (!arr1.length && !arr2.length) return true;

  const left1 = [];
  const left2 = [];
  const right1 = [];
  const right2 = [];
  const root1 = arr1[0];
  const root2 = arr2[0];

  if (root1 !== root2)
    return false;



  for (let i = 1; i < arr1.length; i++) {
    arr1[i] < root1 ? left1.push(arr1[i]) : right1.push(arr1[i]);
    arr2[i] < root2 ? left2.push(arr2[i]) : right2.push(arr2[i]);
  }

  return sameBST(left1, left2) && sameBST(right1, right2);
}