Sanalista

#include <string>
#include <iostream>
#include <unordered_map>

int main() {

	int m;
	std::cin >> m;

	int c = 0;
	for (int i = 0; i < m; i++)
	{
		std::unordered_map<char, int> map;
		std::string s;
		std::cin >> s;

		for (std::size_t j = 0; j < s.length(); j++)
		{
			map[s[j]]++;
		}

		bool foundError = false;
		for (auto e : map)
		{
			if (e.second & 1)
			{
				foundError = true;
				break;
			}
		}
		if (!foundError)
		{
			c++;
		}
	}
	std::cout << c << "\n";
	return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED