#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, s;
  cin >> a >> b >> s;
  if (a < 0) a *= (-1);
  if (b < 0) b *= (-1);
  (s >= (a + b) && (s - a - b) % 2 == 0) ? cout << "YES" : cout << "NO";
  return 0;
}
