program Project2;

{$APPTYPE CONSOLE}

uses
  SysUtils;
var color,q:array[1..100] of integer;
    head,tail,i,n,x,v:integer;
    a:array[1..100,1..100] of boolean;
    f:boolean;
Procedure add(x:integer);
begin
inc(tail);
q[tail]:=x;
end;

function poll:integer;
begin
poll:=q[head];
inc(head);
end;

function empty:boolean;
begin
if head>tail then empty:=true
             else empty:=false;
end;

begin
readln(n);
f:=true;
head:=1;
tail:=0;
for i:=1 to n do
begin
while true do
begin
read(X);
if x=0 then break;
a[x,i]:=true;
//a[i,x]:=true;
end;
end;
for i:=1 to n do color[i]:=-1;
color[1]:=0;
add(1);
while not empty do
  begin
    v:=poll;
    //writeln(color[v]);
    //writeln(v);
    //writeln(head,' ',tail);
    for i:=1 to n do
      if a[v,i] then if color[i]=color[v] then f:=false
                else                   begin
                                       color[i]:=(color[v]+1) mod 2;
                                       add(i);
                                       end;
  end;
if f then for i:=1 to n do write(color[i])
     else write(-1);
readln(n);
end.