1897. Redistribute Characters to Make All Strings Equal

class Solution {
public:
    bool makeEqual(std::vector<std::string>& words) {
        unordered_map<char, int>map;
        for (const string& word : words) {
            for (char ch : word) {
                map[ch]++;
            }
        }
        for (const auto& entry : map) {
            if (entry.second % words.size() != 0) {
                return false;
            }
        }
        return true;
    }
};