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