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