Check If Two String Arrays are Equivalent

<-E 1662> Check If Two String Arrays are Equivalent

class Solution {
public:
    bool arrayStringsAreEqual(vector<string>& word1, vector<string>& word2) {
        string a = "",b = "";
        for(auto x : word1)
            a += x;
        for(auto x : word2)
            b += x;
        return a == b;
        
    }
};