var i,j,max,n,poz:integer;
    t,l:array[1..100000] of longint;
    var f:text;
     procedure sir;
     begin
     l[n]:=1;
     for i:=n-1 downto 1 do
     begin
     max:=0;
          for j:=i+1 to n do
          if (t[i]<t[j]) and (l[j]>max) then
          max:=l[j];
          l[i]:=max+1;
          end;
     end;
    begin
    assign(f,'scmax.in');
    reset(f);
    readln(f,n);
    for i:=1 to n do
    read(f,t[i]);
    sir;
    max:=0;
    for i:=1 to n do
       if l[i]>=max then begin
       max:=l[i];
       poz:=i;
       end;
       assign(f,'scmax.out');
       rewrite(f);
           writeln(f,max);
           write(f,t[poz],' ');
           for i:=1 to n do
           if (t[i]>t[poz]) and (l[i]=max-1) then
           begin
           write(f,t[i],' ');
           dec(max);
           end;
           close(f);
    readln
    end.