// c++ cpp.cpp -o cpp.exe -std =c++14

#include <iostream>
using namespace std;

int main()
{
	int n, a[2];
	cin >> n;
	a[0] = 0;
	a[1] = 0;

	for (int i = 0; i < n; i++)
	{
		int x;
		cin >> x;
		a[(int)(x + 1e9) % 2] += 1;
	}
	cout << abs(a[0] - a[1]) << endl;
}