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