??????????????·???? ??????С???????????? ????????????????????????
????path1: 01-02-03-05-06-07-08-09-10-11
????test case 1:
????push (s?? 3)
????path2: 01-02-03-04-10-11
????test case 2:
????push (s?? 3) (repeat 10 times?? ??? stack ??С??10 ???)
????push (s?? 3)
????(???????????test case 2?? ??????????? test case 1 ?????)
????????????????????????·???? ??????????. ?????????Щ??? ???????????????????. ???????????????ú?в?????????У? ?????в???.
????????δ????д????????? = ??в??????
?????? ?????????а?в?????? ?????????????????????·???? ?????????????????. ???????????????? ???????????????? ????п????????????????? ?????????. ??????????????? ?????????а?в???. ?????????????? ??????????????????.