#include <bits/stdc++.h>
using namespace std;
struct niki {
  int x, y, z;
};
int main() {
  long long n, a, i = 0, b, m, k = 0, l, r;
  double;
  string;
  bool;
  char s2;
  niki;
  vector<int>;
  cin >> a >> b >> n;
  a = abs(a);
  b = abs(b);
  if (a + b > n || (n - a - b) % 2 == 1)
    cout << "NO";
  else
    cout << "YES";
  return 0;
}
