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