#include<iostream>
using namespace std;

int main(void)
{
  long long n, m, k;
  cin>>n>>m>>k;
  for(long long i=0; i<=n; i++) {
    for(long long j=0; j<=m; j++) {
      if(k==j*n+i*m-2*i*j) {
	cout<<"Yes"<<endl;	
	return 0;
      }
    }
  }
  cout<<"No"<<endl;
  return 0;
}
