void main(){
  import std.stdio, std.string, std.conv, std.algorithm;

  int n, m, k; rd(n, m, k);
  
  foreach(i; 0..n+1)foreach(j; 0..m+1){
    int s=0;
    s+=i*m;
    s-=j*i;
    s+=j*(n-i);
    if(s==k){writeln("Yes"); return;}
  }

  writeln("No");
}

void rd(T...)(ref T x){
  import std.stdio, std.string, std.conv;
  auto l=readln.split;
  foreach(i, ref e; x){
    e=l[i].to!(typeof(e));
  }
}