#include <algorithm>
#include <vector>
#include <cfloat>
#include <string>
#include <cmath>
#include <set>
#include <cstdlib>
#include <map>
#include <ctime>
#include <iomanip>
#include <functional>
#include <deque>
#include <iostream>
#include <cstring>
#include <queue>
#include <cstdio>
#include <stack>
#include <climits>
#include <sys/time.h>
#include <cctype>

using namespace std;

typedef long long ll;


int main() {
  int n;
  cin >> n;
  int cnt = 0;
  for (int i = 0; i < n; i++) {
    int x;
    cin >> x;
    cnt += abs(x)%2 == 0;
    cnt -= abs(x)%2 != 0;
  }
  cout << abs(cnt) << endl;
}