#include <bits/stdc++.h>
using namespace std;
int main() {
  long long x, y, w, sum1 = 0;
  cin >> x >> y >> w;
  sum1 = abs(x) + abs(y);
  if (w >= sum1 && (w - sum1) % 2 == 0)
    cout << "YES" << endl;
  else
    cout << "NO" << endl;
  return 0;
}
