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