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