12018312132,723+830.1010010001,4sin60o31aba+b=0a=b2|a|0|a|=aa0|a|=-aa03abab=11-13101aaaa2aaaaa00aaa2a-aa0a03aaa33aa36122na10101an31212ab,0baba,0babababa03ab;1;1;1babababababa4abbaba5abbaba221abba2)()(cbacba3baab4)()(bcacab5acabcba)(6312ba2314ba2313cba2356111122331++2412),(nmaaanmnm),(nmaamnnm)()(nbaabnnn22))((bababa2222)(bababa2222)(bababa)0,,(anmaaanmnm123456),0(1);0(10paaaaapp711121)(cbaacab2))((22bababa222)(2bababa222)(2bababa3))(()()(dcbadcbdcabdbcadac4))(()(2qapapqaqpa312234438~101ABABBABBAAB21243;;bcadcdbadcbabdacdcba);()(nbabannn;cbacbcabdbcaddcba1)0(aaa212341)0()(2aaa)0(aa2aa2)0(aa3)0,0(babaab4)0,0(bababa5612312410ax0baxaxb6122)0(02acbxaxx2axabxbc5101bax2)(axb0bbaxbaxb02222)(2bababaaxx222)(2bxbbxx3)0(02acbxax)04(2422acbaacbbx43)0(02acbxaxacb42)0(02acbxaxacb42102=0303)0(02acbxax21xxabxx21acxx2181212338~1011623451261731233~51236~811212345x181x212311n,,,,21nxxx)(121nxxxnxnxx72n1x1f2x2f,kxkfnfffk21nnfxfxfxxkk2211xkfff,,,2121,,,,21nxxx)(121nxxxnx2nfxfxfxxkk2211nfffk213aaxx'aaxx11'axx22',axxnn')'''(1'21nxxxnx,,,,21nxxx,',,','21nxxx41234563~51231,,,,21nxxxx2s])()()[(1222212xxxxxxnsn21])()()[(1222212xxxxxxnsn2])[(12222212xnxxxnsn2222212)][(1xxxxnsn83]')'''[(12222212xnxxxnsnaaxx11'axx22',axxnn'2222212')]'''[(1xxxxnsn4,,,,21nxxxaxx11'axx22',axxnn',',,','21nxxx3s])()()[(1222212xxxxxxnssn61212n31235~61AmnppA2ABC,ApPA=P3191APA=12APA=0201312nAmAPA=nm10121012812331xyOxyxy2ab10baabba31P(x,y)0,0yxP(x,y)0,0yxP(x,y)0,0yxP(x,y)0,0yx2P(x,y)x0yxP(x,y)y0xyP(x,y)xyxyP003P(x,y)xyP(x,y)xy4xy5xyPpxPpyPp6P(x,y)1P(x,y)xy2P(x,y)yx3P(x,y)22yx3~81xyxyxyx2312xy341233~10111bkxykbk0yxbkxyb0kxykk0yx23bkxy0bkxy00kbk0b0y0xyxb0y0xyxK0b00xyxb0y0xyxb=04kxy1k0yx2k0yx5bkxy1k0yx2k0yx612kxyk0kbkxyk0kb3~101xkykk01kxyxx02x0y0xy3)0(kxkykk0k0yOxyOxxx0yy0k0yxxx0yy0k0yx4xkyk5)0(kxkyPxyPMPNPMONS=PMPN=xyxykSkxyxky,,3~81)0,,(2acbacbxaxyyx