#include <bits/stdc++.h>
using namespace std;
int main(int argc, char* argv[]) {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int a, b, s;
  cin >> a >> b >> s;
  if (s >= (abs(a) + abs(b)) && (((abs(a) + abs(b)) % 2 == 0 && s % 2 == 0) ||
                                 (abs(a) + abs(b)) % 2 != 0 && s % 2 != 0))
    cout << "YES";
  else
    cout << "NO";
  return 0;
}
