#include<iostream>

int main() {
	int n;
	std::cin >> n;

	//[0]=odd, [1]=even;
	int count = 0;
	for (int i = 0; i < n; i++) {
		long long num;
		std::cin >> num;
		num = abs(num);
		if (num % 2 == 0)count++;
		else count--;
	}

	std::cout << abs(count) << std::endl;
	return 0;
}