program ORDER;

{$APPTYPE CONSOLE}

uses
  SysUtils,
  math;
  var m:byte;
  i,j,l,k,d:longint;
  vh,v:text;
  s:real;
  A:array [1..101,0..1048576] of longint;
begin
  { TODO -oUser -cConsole Main : Insert code here }
 assign (vh,'ORDER.dat');
 assign (v, 'ORDER.sol');
 reset(vh);
  read (vh,m);
  for i:=1 to m do
  begin
   read (vh,A[i,0]);
   for j:=1 to A[i,0] do
   begin
    read (vh,A[i,j]);
   end;
  end;
 close (vh);
 k:=0;
 for i:=1 to m do
 begin
  k:=0;
  for j:=1 to A[i,0]-1 do
  begin
   for l:=j+1 to A[i,0] do
   begin
    if A[i,j]>A[i,l] then k:=k+1;
   end;
  end;
  A[i,0]:=k;
 end;
 for i:=1 to m do
 begin
  A[i,0]:=A[i,0] mod 2;
 end;
 rewrite (v);
 s:=0;
 j:=m mod 4;
 l:=j;
 for i:=1 to j do
 begin
  s:=s+(A[i,0]*power(10,l-i));
 end;
 k:=trunc(s);
 if k=1 then write (v,'1') else
 if k=10 then write (v,'2') else
 if k=11 then write (v,'3') else
 if k=100 then write (v,'4') else
 if k=101 then write (v,'5') else
 if k=110 then write (v,'6') else
 if k=111 then write (v,'7') else
 if k=1000 then write (v,'8') else
 if k=1001 then write (v,'9') else
 if k=1010 then write (v,'A') else
 if k=1011 then write (v,'B') else
 if k=1100 then write (v,'C') else
 if k=1101 then write (v,'D') else
 if k=1110 then write (v,'E') else
 if k=1111 then write (v,'F');
 j:=m div 4;
 s:=0;
 for d:=1 to j do
 begin
  s:=0;
  for i:=l+1 to l+4 do
  begin
   s:=s+(A[i,0]*power(10,l+4-i));
  end;
  k:=trunc(s);
  if s=0 then write (v,'0') else
  if s=1 then write (v,'1') else
  if s=10 then write (v,'2') else
  if s=11 then write (v,'3') else
  if s=100 then write (v,'4') else
  if s=101 then write (v,'5') else
  if s=110 then write (v,'6') else
  if s=111 then write (v,'7') else
  if s=1000 then write (v,'8') else
  if s=1001 then write (v,'9') else
  if s=1010 then write (v,'A') else
  if s=1011 then write (v,'B') else
  if s=1100 then write (v,'C') else
  if s=1101 then write (v,'D') else
  if s=1110 then write (v,'E') else
  if s=1111 then write (v,'F');
  l:=l+4;
 end;


 close (v);
end.