#include <bits/stdc++.h>
using namespace std;
int main() {
  long long int a, b, s;
  cin >> a >> b >> s;
  if (a < 0) a = a * (-1);
  if (b < 0) b = b * (-1);
  if (a + b > s) {
    cout << "NO" << endl;
    return 0;
  }
  if ((s - a - b) % 2 == 1) {
    cout << "NO" << endl;
    return 0;
  } else {
    cout << "YES" << endl;
    return 0;
  }
}
