Maximum Number of Words Found in Sentences LeetCode solution in C++

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class Solution {
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 public:
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  int mostWordsFound(vector<string> &sentences) {
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    int res = 0;
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    for (auto const &s : sentences) {
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      int n = count(s.begin(), s.end(), ' ');
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      res = max(res, n + 1);
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    }
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    return res;
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  }
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};