YES
Time: 0.003775
TRS:
 {f s s x -> f f s x,
  f s 0() -> s 0(),
    f 0() -> s 0()}
 DP:
  DP:
   {f# s s x -> f# s x,
    f# s s x -> f# f s x}
  TRS:
  {f s s x -> f f s x,
   f s 0() -> s 0(),
     f 0() -> s 0()}
  EDG:
   {}
   STATUS:
    arrows: 1.000000
    SCCS (0):