(GOAL COMPLEXITY)
(STARTTERM (FUNCTIONSYMBOLS f0))
(VAR A B C)
(RULES
  f2(A,B,C) -> Com_1(f2(A + B,B - 2,C + 1))
  f2(A,B,C) -> Com_1(f2(A + C,B,C - 2))
  f0(A,B,C) -> Com_1(f2(A,B,C)) :|: A >= 0
)