class Solution {
public:
    int countMatches(vector<vector<string>>& items, string ruleKey, string ruleValue) {
        int key;
        if(ruleKey == "type")
        key = 0;
        else if(ruleKey == "color")
        key = 1;
        else
        key = 2;
        int sum = 0;
        for(int i=0;i<items.size();i++)
        {
            if(items[i][key] == ruleValue)
            sum++;
        }

        return sum;
    }
};