var f,g:text;
    n,i,j,max,poz:longint;
    a,c:array[0..100001] of longint;
begin
assign(f,'scmax.in');reset(f);
assign(g,'scmax.out');rewrite(g);
read(f,n);
for i:=1 to n do read(f,a[i]);
for i:=1 to n-1 do c[i]:=0;
c[n]:=1;
for i:=n-1 downto 1 do
 for j:=i+1 to n do
  if a[i]<a[j] then
   if c[i]<c[j] then begin
    c[i]:=c[j]+1;
    if max<c[i] then begin
     max:=c[i];
     poz:=i;
    end;
   end;
writeln(g,max);
write(g,a[poz],' ');
max:=max-1;
for i:=poz+1 to n do
 if (c[i]=max)and(a[poz]<a[i]) then begin
  write(g,a[i],' ');
  poz:=i;
  max:=max-1;
 end;
close(f);
close(g);
end.