#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  int n;
  cin >> n;
  int odd = 0, even = 0;
  rep(_, n) {
    int a;
    cin >> a;
    (a % 2 == 0 ? even : odd)++;
  }
  cout << (odd % 2 != even % 2) << endl;
  return 0;
}