1
var peopleIndexes = function (favoriteCompanies) {
2
  let arr = favoriteCompanies;
3
  let len = arr.length;
4
  let ret = [];
5
  for (let i = 0; i < len; i++) {
6
    let item1 = arr[i];
7
    let isSubset = false;
8
    for (let j = 0; j < len; j++) {
9
      if (i === j) continue;
10
      let item2 = arr[j];
11
      let s = new Set(item2);
12
      if (item1.every((a) => s.has(a))) {
13
        isSubset = true;
14
        break;
15
      }
16
    }
17
    if (!isSubset) ret.push(i);
18
  }
19
  return ret;
20
};