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