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