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