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