class Solution {

public:

    int expressiveWords(string S, vector<string>& words) {

        int res = ;

        for (const auto& w : words) {

            if (check(S, w))

                res++;

        }

        return res;

    }

    bool check(const string& s, const string& w) {

        int i = , j = , m = s.length(), n = w.length();

        while (i < m && j < n) {

            if (s[i] != w[j])   return false;

            int ii = , jj = ;

            while (++i < m && s[i] == s[i-]) ii++;

            while (++j < n && w[j] == w[j-]) jj++;

            if (ii < jj || ii <  && ii != jj)    return false;

        }

        return i == m && j == n;

    }

};