#include <bits/stdc++.h>
using namespace std;
int main() {
  long long x, y, k;
  cin >> x >> y >> k;
  if (x < 0) x = -x;
  if (y < 0) y = -y;
  if (x + y > k)
    cout << "NO";
  else if ((k - (x + y)) % 2 == 0)
    cout << "YES";
  else
    cout << "NO";
  return 0;
}
