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