??????????????????佫?????? ???????佫??? ?????????佫???? ?佫????????????????????????????????????飬?????????Щ???72С?????????? ????????佫???????? ???????????PK?????????????Щ?佫???????????????????????????????????? ????????????????Щ?????????佫?????????????????????????ú????? ????????????????辭??????????1?????? N ?? = 120 x N^2 ????? 1?? = 120 x 1^2 = 120 ???? 100?? = 120 x 100^2 = 1200000 ???? 150?? = 120 x 150^2 = 2700000 ???? ??1????N???????????????? S = 20N (N - 1)(2N - 1) ????????????£??????????????飺 60 ?? 8425200 ???? 100 ?? 39402000 ???? 65 ?? 10732800 ???? 105 ?? 45645600 ???? 70 ?? 13427400 ???? 110 ?? 52516200 ???? 75 ?? 16539000 ???? 115 ?? 60043800 ???? 80 ?? 20097600 ???? 120 ?? 68258400 ???? 85 ?? 24133200 ???? 125 ?? 77190000 ???? 90 ?? 28675800 ???? 130 ?? 86868600 ???? 95 ?? 33755400 ???? ???????150??????????佫?????????????7.2??????? ??????????????????????????????????????????? ?????????????佫????????? ????????(??????)???????????????????????佫???????????????????? ??????????????? ???????????????????ε??佫???ɡ? ??????100???????δ??????7?ξ??飬???12????84?? ???δ??????252???????д?????????????????????????????????????2-3????????? ???ξ???6-9???????????????720-1080???顣???????????????1000-1300?????????顣?????????????佫???????Щ???鹻????65-70???? ????佫?????????????????????????????У????????? 1????У?? 100??????1.2???飬100????У??1000??????12???顣???????????????????У???????????100???? 100????У??????????1С????40????????顣?????Σ????????????????????????????????1.2??1.5??2??3???? ???????????1С? 4С? 8С? 24С? 72С? ????????????40????160?? 320?? 960?? 2880?? ?????? ??????48????192?? 384?? 1152?? 3456?? ????????????60????240?? 480?? 1440?? 4320?? ????????????? 80????320?? 640?? 1920?? 5760?? ????????????120????480?? 960?? 2880?? 8640?? ????????????(?????????????)??24С????1 ??? = 480 ??????????????(???????????)??24С???Σ?1 ??? = 360 ?????????????(???????????)??8С????1 ??? = 720 ?????????????(????? ???)??72С??????1 ??? = 216 480?? 360?? 720?? 216?????????????????(?????100?????С???????????????)?????????????? 24С????(5+5???)???????????????佫??????Σ?8С????(2000????+1???)???????鷳??Ч????????????????????????????????????????????(???????t???ɡ?????)??????????佫?????????????????(??)?????????????????????????????????t?? ???????????????????Щ???????????е?????(?????У?????????????????)???м???? ??????????????????????????????????????
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