#include <bits/stdc++.h>
using namespace std;
int main() {
  long a, b, s;
  cin >> a >> b >> s;
  a = (a >= 0) ? a : a * (-1);
  b = (b >= 0) ? b : b * (-1);
  if (s < (a + b))
    cout << "No\n";
  else if (s == (a + b) || (s - (a + b)) % 2 == 0)
    cout << "Yes\n";
  else
    cout << "No\n";
  return 0;
}
