program paperfolding;

{$APPTYPE CONSOLE}

uses
  SysUtils, math;

// Function to determine the type of fold for a given offset and total folds
function fold(f, c, first : integer) : integer;
begin
  if c = power(2, f) then
    result := first;
  if c < power(2, f) then
    result := fold(f - 1, c, first);
  if c > power(2, f) then
    result := fold(f - 1, c - floor(power(2, f)), (first + 1) mod 2);
end;

var
  f, c : integer;
  du : string;
begin
  du := 'DU';
  readln(f, c);
  writeln(du[fold(f, c, 0) + 1], du[fold(f, c + 1, 0) + 1], du[fold(f, c + 2, 0) + 1]);
  readln;
end.