#include <bits/stdc++.h>
using namespace std;
int main() {
  long long a, b, s;
  cin >> a >> b >> s;
  if (s < abs(a) + abs(b) || (s - abs(a) - abs(b)) % 2)
    cout << "NO" << endl;
  else
    cout << "YES" << endl;
  return 0;
}
