string largestWordCount(vector<string>& messages, vector<string>& senders) {
        int n=messages.size();
        unordered_map<string,int>u;

        for(int i=0; i<n; i++) {
            string s=messages[i];
            int state=0, wc=0;

            for(int j=0; j<s.length(); j++) {
                if(s[j] == ' ')
                  state=0;
                else if(state==0)
                {
                    state=1;
                    ++wc;
                }
            }

            if(u.find(senders[i]) != u.end())
                u[senders[i]] += wc;
            else
                u[senders[i]] = wc;
        }

        int mx = INT_MIN;
        string final;
        for(auto itr=u.begin(); itr!=u.end(); itr++) {
            if(mx < itr->second)
            {
                mx=itr->second;
                final = itr->first;
            }
        }
        return final;
    }
	```