#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  long long a, b, c;
  cin >> a >> b >> c;
  long long x = abs(a) + abs(b);
  if (c < x || (c - x) & 1)
    cout << "NO" << endl;
  else
    cout << "YES" << endl;
  return 0;
}
