program Project2;

{$APPTYPE CONSOLE}

uses
  SysUtils;

var
 f1,f2:text;
 s,r,i:integer;
 a:array[0..1000000] of integer;
begin
  assign(f1,'Jamming.dat');
  reset(f1);
  assign(f2,'Jamming.sol');
  rewrite(f2);
  readln(f1,s);
  a[1]:=1;
  a[0]:=1;
  for i:=1 to s+2 do
  a[i]:=a[i-1]+a[i-2];

  r:=a[s]*a[s];
  write(f2,r);

  close(f1);
  close(f2);
end.