#include <iostream>
#include<string>

using namespace std;
using ll = long long int;
int main(void){
    int n, ans;
    cin >> n;
    ll x;
    for (int i = 0; i < n; i ++){
        cin >> x;
        if (x % 2 == 0){
            ans ++;
        }
        else{
            ans --;
        }
    }
    cout << abs(ans) << endl;
    
    return 0;
}