#include <iostream>
using namespace std;
int main(){
  int N, M, K;
  cin >> N >> M >> K;
  for(int i = 0; i <= M; ++i){
    for(int j = 0; j <= N; ++j){
      if(i*N + j*M - 2*i*j == K){
	cout << "Yes" << endl;
	return 0;
      }
    }
  }
  cout << "No" << endl;
  return 0;
}
