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