#include <iostream>
#include <algorithm>
#include <fstream>
#include <set>
using namespace std;

int main()
{
    int odd = 0;
    int even = 0;
    int x, y;
    cin >> y;
    for (int i = 0; i < y; i++) {
        cin >> x;
        if (x % 2 == 0) even++;
        else odd++;
    }
    while (odd > even) {
        odd--;
        odd--;
        even++;
    }
    if (even > odd + 1)even = odd + 1;
    cout << even + odd;
}