class Solution {
    public int countMatches(List<List<String>> items, String ruleKey, String ruleValue) {
        int key, count=0;
        if(ruleKey.equals("type"))
            key=0;
        else if(ruleKey.equals("color"))
            key=1;
        else
            key=2;
        
        for(int i=0; i<items.size(); i++){
            if(items.get(i).get(key).equals(ruleValue))
                count++;
        }
        
        return count;
    }
}