var
    m,n:integer;
    a:array[-20..22,-20..22]of longint;
    begin
    assign(input,'horse.in');assign(output,'horse.out');
    reset(input);rewrite(output);
    read(m,n);
    a[1,1]:=1;
    for n:=1 to n do
    for m:=1 to m do
    begin
    a[m+2,n+1]:=a[m+2,n+1]+a[m,n];
    a[m-2,n+1]:=a[m-2,n+1]+a[m,n];
    a[m+1,n+2]:=a[m+1,n+2]+a[m,n];
    a[m-1,n+2]:=a[m-1,n+2]+a[m,n];
    end;
    writeln(a[m,n]);
    close(input);close(output);
    end.