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