#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, k, ans = 0, odd = 0, ev = 0;
  cin >> n;
  int a[n + 1];
  for (int i = 0; i < n; i++) {
    cin >> a[i];
    if (a[i] & 1)
      odd++;
    else
      ev++;
  }
  if (n == 1) {
    if (odd)
      cout << "Yes";
    else
      cout << "No";
    return 0;
  }
  if (a[0] % 2 == 0 || a[n - 1] % 2 == 0) {
    cout << "No";
  } else {
    if (n & 1) {
      if (odd >= 2)
        cout << "Yes";
      else
        cout << "No";
    } else {
      cout << "No";
    }
  }
  return 0;
}
