import std.algorithm, std.array, std.container, std.range;
import std.string, std.conv, std.bigint, std.math, std.random;
import std.stdio, std.typecons;

void main()
{
  auto rd = readln.split.map!(to!int);
  auto n = rd[0];
  auto m = rd[1];
  auto c = rd[2];

  if (n > m) swap(n, m);

  if (n == 1) {
    writeln(m == 2 ? "YES" : "NO");
  } else {
    writeln(n % 2 == 0 || m % 2 == 0 ? "YES" : "NO");
  }
}