leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
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2870.cpp (362B)

      1 class Solution {
      2   public:
      3     int minOperations(const vector<int> &nums) const {
      4         unordered_map<int, int> count;
      5         for (const int n : nums)
      6             count[n]++;
      7 
      8         int res = 0;
      9         for (const auto [_, cnt] : count) {
     10             if (cnt == 1) return -1;
     11             res += ceil((double)cnt / 3);
     12         }
     13         return res;
     14     }
     15 };