program asdfghjkl12;

{$APPTYPE CONSOLE}

uses
  SysUtils;

var a:array[1..10000]of integer;
  n,i,s:integer;

begin
  writeln('vvedit kilikist elementiv n');
  readln(n);
  for i:=1 to n do
  begin
  write('a[',i,']=');
  readln(a[i]);
  end;
  s:=a[1];
  a[1]:=a[n];
  a[n]:=s;
  for i:=1 to n do
  write(a[i],' ');
  readln;
end.