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