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