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(83=24)121()A2B2C12D12223xx()Ax0Bx3Cx3Dx334yx()ABCD4()A123B3,4,5C2,3,5D32425250abyaxbyx6ABCDAEDBCFAB=4cmBC=5cmCE()A1cmB15cmC2cmD257AB48ABBA94/x()A4848944xxB4848944xxC9696944xxD9696944xx8lABCAC()A52B135C10D3(83=24)9________10024=________112________12x232xmxm________13P(21)________140000021________1532xxyyx________16M(21)N(26)kyxMNkyxPyPGGOPGS________17(12)(1)22babab2232()224xxxxxxx=3(3)11222xxx186x19(7)l0cm2xcmycm(1)yx(2)(1)(3)y2x20(7)()165m?21(7)1ykx9yxAAxyBCOBAC22(6)1(1)325(2)1023(7)711500300154?24(10)P(232)PxyA(0)kyxxNPMAN(0)kyxxMAMPN=41k2APM25(10)ABCABBCAC51013(1)ABC(ABC)ABC(1)ABC__________(2)ABCABC5a10a17a(0)aaABC3ABC2216mn2294mn222mn0,0mnmn