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