#include<iostream>
#include<cmath>
using namespace std;

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