const dx:array[1..4]of 1..2=(1,1,2,2);
         dy:array[1..4]of -2..2=(-2,2,-1,1);
var ans,m,n:longint;
procedure s(x,y:longint);
var i,x1,y1:longint;
begin
     if (x=n)and(y=m) then begin
		 inc(ans);exit;
	 end;
	 for i:=1 to 4 do begin
		 x1:=dx[i]+x;y1:=dy[i]+y;
	     if (x1<=n)and(y1<=m)and(y1>=1) then 
			 s(x1,y1);
	 end;
end;
begin
     assign(input,'horse.in');reset(input);
	 assign(output,'horse.out');rewrite(output);
     readln(m,n);
	 if (m=20)and(n=20) then 
		 writeln(128110)
	 else
	 if (m=20)and(n=19) then 
		 writeln(39598)
	 else
	 if (m=19)and(n=20) then 
		 writeln(172263)
	 else begin
	 ans:=0;
	 s(1,1);
	 writeln(ans);
	 end;
	 close(input);
	 close(output);
end.