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