#include<iostream>
#include <stdlib.h>
using namespace std;


int main()
{
	int n; cin >> n;
	int gu = 0;
	int ki = 0;
	for (int i = 0; i < n; i++)
	{
		int x;
		cin >> x;
		if (abs(x) % 2 == 0)gu++;
		else ki++;
	}
	cout << abs(ki - gu) << endl;
	
	return 0;
}