#include <iostream>
#include <algorithm>
#include <vector>

int main()
{
	int n, m;
	std::cout << "Enter n and m\n";
	std::cin >> n >> m;
	std::vector<int> x(n);
	std::vector<int> y(m);

	std::cout << "Enter array X\n";
	for (size_t i = 0; i < n; ++i)
	{
		std::cin >> x[i];
	}

	std::cout << "Enter array Y\n";
	for (size_t k = 0; k < m; ++k)
	{
		std::cin >> y[k];
	}

	auto items = std::count_if(y.begin(), y.end(), [x](int i) {return i == x[0]; });
	std::cout << "Items: " << items << std::endl;
	
	system("pause");
	return 0;
}