program cogs1757;
var
n,i,sum:longint;
function power(a,p,t:longint):int64;
begin
 if p=0 then exit(1);
 a:=a mod t;
 power:=power(a,p shr 1,t);
 power:=power*power mod t;
 if p and 1=1 then power:=(power*a)mod t;
end;
function mr(t:longint):boolean;
var i,m:longint;
begin
  for i:=1 to 32 do begin
      m:=random(t-2)+1;
      if power(m,t-1,t)<>1 then exit(false);
  end;
exit(true);end;
begin
assign(input,'pian_fen.in');reset(input);
assign(output,'pian_fen.out');rewrite(output);
readln(n);
writeln('No!');
close(input);close(output);
end.