#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, s;
  cin >> a >> b >> s;
  a = abs(a), b = abs(b);
  int minDist = a + b;
  int extra = s - minDist;
  if (extra < 0 || extra & 1)
    cout << "NO";
  else
    cout << "YES";
  return 0;
}
