program sv;
const a : array[1..100] of integer = (1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,2,8,1,7,2,8,5
,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3
,4,0,3,9,4,0,7,1,0,0);
var s,s1 : string[100];
    f,g : text;
    i,n,x,er : integer;
begin
     assign(f,'cifra.in');
     reset(f);
     assign(g,'cifra.out');
     rewrite(g);
     readln(f,s1);
     val(s1,n,er);
     for i := 1 to n do
         begin
              readln(f,s);
              if length(s) > 2 then val(copy(s,length(s)-2,2),x,er)
                               else val(s,x,er);
              writeln(g,a[x]);
         end;
     close(f);
     close(g);
end.