Finding the Users Active Minutes LeetCode solution in C++

1
class Solution {
2
 public:
3
  vector<int> findingUsersActiveMinutes(vector<vector<int>> &logs, int k) {
4
    unordered_map<int, set<int>> map;
5
    vector<int> res(k, 0);
6
    for (auto &log : logs) {
7
      map[log[0]].insert(log[1]);
8
    }
9
    for (auto i : map) {
10
      res[i.second.size() - 1]++;
11
    }
12
    return res;
13
  }
14
};