#include <vector>
#include <string>
#include <algorithm>

/**
 * 1773. Count Items Matching a Rule
 *
 * You are given an array items, where each items[i] = [typei, colori, namei] describes the type, color, and name of the ith item. You are also given a rule represented by two strings, ruleKey and ruleValue.
 * The ith item is said to match the rule if one of the following is true:
 * - ruleKey == "type" and ruleValue == typei.
 * - ruleKey == "color" and ruleValue == colori.
 * - ruleKey == "name" and ruleValue == namei.
 * Return the number of items that match the given rule.
 */

class Solution {
public:
	static int countMatches(const std::vector<std::vector<std::string>>& i, const std::string& k, const std::string& v) {
		return std::count_if(i.begin(), i.end(), [&](auto&& x) { return x[(4 - k[0]) & 3] == v; });
	}
};