function towerBreakers(arr) {
    // Write your code here
   let sumArr = [];
  for (let i = 0; i < arr.length; i++) {
    let sum = 0;
    if (arr[i] === 2 || arr[i] === 3) sum++;
    else {
      for (let j = 2; j <= arr[i]; j++) {
        while (arr[i] % j == 0) {
          sum++;
          arr[i] = arr[i] / j;
        }
      }
    }
    sumArr.push(sum);
  }
  return sumArr.reduce((a, v) => (a ^= v)) ? "1" : "2";
}