program poj1000;
  var
    f:array[0..10,0..10] of integer;
    i,j:integer;
    a,b:integer;
  function max(x,y:integer):integer;
    begin
      if x>y then exit(x) else exit(y);
    end;
  begin
    readln(a,b);
    for i:=0 to a do f[a,0]:=i;
    for j:=0 to b do f[0,b]:=j;
    for i:=1 to a do
      for j:=1 to b do
        begin
          f[i,j]:=max(f[i-1,j]+1,f[i,j-1]+1);
        end;
    writeln(f[a,b]);
  end.