function Main(input) {
	input = input.trim().split(" ").map((a)=>Number(a));
  if(input[0] % 2 == 0 || input[1] % 2 == 0) {
     console.log("No");
     }else{
      console.log("Yes"); 
     }
}

Main(require("fs").readFileSync("/dev/stdin", "utf8"));
