SNOI 2017 题解
Posted qq62c30ac77b2a7
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了SNOI 2017 题解相关的知识，希望对你有一定的参考价值。
[SNOI2017]礼物 直接矩阵乘就好了，需要维护%22%20aria-hidden%3D%22true%22%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMATHI-69%22%20x%3D%220%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-6B%22%20x%3D%22488%22%20y%3D%22583%22%3E%3C%2Fuse%3E%0A%3C%2Fg%3E%0A%3C%2Fsvg%3E)
,转移要用二项式展开一些
[SNOI2017]英雄联盟 直接背包不行，转换一些,%22%20aria-hidden%3D%22true%22%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMATHI-66%22%20x%3D%220%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%3Cg%20transform%3D%22translate(490%2C-150)%22%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-69%22%20x%3D%220%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-2C%22%20x%3D%22345%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-6A%22%20x%3D%22624%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%3C%2Fg%3E%0A%3C%2Fg%3E%0A%3C%2Fsvg%3E)
表示到i，花 j 元，最多能凑到多少%3C%2Ftitle%3E%0A%3Cdefs%20aria-hidden%3D%22true%22%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMATHI-66%22%20d%3D%22M118%20-162Q120%20-162%20124%20-164T135%20-167T147%20-168Q160%20-168%20171%20-155T187%20-126Q197%20-99%20221%2027T267%20267T289%20382V385H242Q195%20385%20192%20387Q188%20390%20188%20397L195%20425Q197%20430%20203%20430T250%20431Q298%20431%20298%20432Q298%20434%20307%20482T319%20540Q356%20705%20465%20705Q502%20703%20526%20683T550%20630Q550%20594%20529%20578T487%20561Q443%20561%20443%20603Q443%20622%20454%20636T478%20657L487%20662Q471%20668%20457%20668Q445%20668%20434%20658T419%20630Q412%20601%20403%20552T387%20469T380%20433Q380%20431%20435%20431Q480%20431%20487%20430T498%20424Q499%20420%20496%20407T491%20391Q489%20386%20482%20386T428%20385H372L349%20263Q301%2015%20282%20-47Q255%20-132%20212%20-173Q175%20-205%20139%20-205Q107%20-205%2081%20-186T55%20-132Q55%20-95%2076%20-78T118%20-61Q162%20-61%20162%20-103Q162%20-122%20151%20-136T127%20-157L118%20-162Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMATHI-69%22%20d%3D%22M184%20600Q184%20624%20203%20642T247%20661Q265%20661%20277%20649T290%20619Q290%20596%20270%20577T226%20557Q211%20557%20198%20567T184%20600ZM21%20287Q21%20295%2030%20318T54%20369T98%20420T158%20442Q197%20442%20223%20419T250%20357Q250%20340%20236%20301T196%20196T154%2083Q149%2061%20149%2051Q149%2026%20166%2026Q175%2026%20185%2029T208%2043T235%2078T260%20137Q263%20149%20265%20151T282%20153Q302%20153%20302%20143Q302%20135%20293%20112T268%2061T223%2011T161%20-11Q129%20-11%20102%2010T74%2074Q74%2091%2079%20106T122%20220Q160%20321%20166%20341T173%20380Q173%20404%20156%20404H154Q124%20404%2099%20371T61%20287Q60%20286%2059%20284T58%20281T56%20279T53%20278T49%20278T41%20278H27Q21%20284%2021%20287Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMAIN-2C%22%20d%3D%22M78%2035T78%2060T94%20103T137%20121Q165%20121%20187%2096T210%208Q210%20-27%20201%20-60T180%20-117T154%20-158T130%20-185T117%20-194Q113%20-194%20104%20-185T95%20-172Q95%20-168%20106%20-156T131%20-126T157%20-76T173%20-3V9L172%208Q170%207%20167%206T161%203T152%201T140%200Q113%200%2096%2017Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMATHI-6A%22%20d%3D%22M297%20596Q297%20627%20318%20644T361%20661Q378%20661%20389%20651T403%20623Q403%20595%20384%20576T340%20557Q322%20557%20310%20567T297%20596ZM288%20376Q288%20405%20262%20405Q240%20405%20220%20393T185%20362T161%20325T144%20293L137%20279Q135%20278%20121%20278H107Q101%20284%20101%20286T105%20299Q126%20348%20164%20391T252%20441Q253%20441%20260%20441T272%20442Q296%20441%20316%20432Q341%20418%20354%20401T367%20348V332L318%20133Q267%20-67%20264%20-75Q246%20-125%20194%20-164T75%20-204Q25%20-204%207%20-183T-12%20-137Q-12%20-110%207%20-91T53%20-71Q70%20-71%2082%20-81T95%20-112Q95%20-148%2063%20-167Q69%20-168%2077%20-168Q111%20-168%20139%20-140T182%20-74L193%20-32Q204%2011%20219%2072T251%20197T278%20308T289%20365Q289%20372%20288%20376Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMAIN-3D%22%20d%3D%22M56%20347Q56%20360%2070%20367H707Q722%20359%20722%20347Q722%20336%20708%20328L390%20327H72Q56%20332%2056%20347ZM56%20153Q56%20168%2072%20173H708Q722%20163%20722%20153Q722%20140%20707%20133H70Q56%20140%2056%20153Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMATHI-6D%22%20d%3D%22M21%20287Q22%20293%2024%20303T36%20341T56%20388T88%20425T132%20442T175%20435T205%20417T221%20395T229%20376L231%20369Q231%20367%20232%20367L243%20378Q303%20442%20384%20442Q401%20442%20415%20440T441%20433T460%20423T475%20411T485%20398T493%20385T497%20373T500%20364T502%20357L510%20367Q573%20442%20659%20442Q713%20442%20746%20415T780%20336Q780%20285%20742%20178T704%2050Q705%2036%20709%2031T724%2026Q752%2026%20776%2056T815%20138Q818%20149%20821%20151T837%20153Q857%20153%20857%20145Q857%20144%20853%20130Q845%20101%20831%2073T785%2017T716%20-10Q669%20-10%20648%2017T627%2073Q627%2092%20663%20193T700%20345Q700%20404%20656%20404H651Q565%20404%20506%20303L499%20291L466%20157Q433%2026%20428%2016Q415%20-11%20385%20-11Q372%20-11%20364%20-4T353%208T350%2018Q350%2029%20384%20161L420%20307Q423%20322%20423%20345Q423%20404%20379%20404H374Q288%20404%20229%20303L222%20291L189%20157Q156%2026%20151%2016Q138%20-11%20108%20-11Q95%20-11%2087%20-5T76%207T74%2017Q74%2030%20112%20181Q151%20335%20151%20342Q154%20357%20154%20369Q154%20405%20129%20405Q107%20405%2092%20377T69%20316T57%20280Q55%20278%2041%20278H27Q21%20284%2021%20287Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMATHI-61%22%20d%3D%22M33%20157Q33%20258%20109%20349T280%20441Q331%20441%20370%20392Q386%20422%20416%20422Q429%20422%20439%20414T449%20394Q449%20381%20412%20234T374%2068Q374%2043%20381%2035T402%2026Q411%2027%20422%2035Q443%2055%20463%20131Q469%20151%20473%20152Q475%20153%20483%20153H487Q506%20153%20506%20144Q506%20138%20501%20117T481%2063T449%2013Q436%200%20417%20-8Q409%20-10%20393%20-10Q359%20-10%20336%205T306%2036L300%2051Q299%2052%20296%2050Q294%2048%20292%2046Q233%20-10%20172%20-10Q117%20-10%2075%2030T33%20157ZM351%20328Q351%20334%20346%20350T323%20385T277%20405Q242%20405%20210%20374T160%20293Q131%20214%20119%20129Q119%20126%20119%20118T118%20106Q118%2061%20136%2044T179%2026Q217%2026%20254%2059T298%20110Q300%20114%20325%20217T351%20328Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMATHI-78%22%20d%3D%22M52%20289Q59%20331%20106%20386T222%20442Q257%20442%20286%20424T329%20379Q371%20442%20430%20442Q467%20442%20494%20420T522%20361Q522%20332%20508%20314T481%20292T458%20288Q439%20288%20427%20299T415%20328Q415%20374%20465%20391Q454%20404%20425%20404Q412%20404%20406%20402Q368%20386%20350%20336Q290%20115%20290%2078Q290%2050%20306%2038T341%2026Q378%2026%20414%2059T463%20140Q466%20150%20469%20151T485%20153H489Q504%20153%20504%20145Q504%20144%20502%20134Q486%2077%20440%2033T333%20-11Q263%20-11%20227%2052Q186%20-10%20133%20-10H127Q78%20-10%2057%2016T35%2071Q35%20103%2054%20123T99%20143Q142%20143%20142%20101Q142%2081%20130%2066T107%2046T94%2041L91%2040Q91%2039%2097%2036T113%2029T132%2026Q168%2026%20194%2071Q203%2087%20217%20139T245%20247T261%20313Q266%20340%20266%20352Q266%20380%20251%20392T217%20404Q177%20404%20142%20372T93%20290Q91%20281%2088%20280T72%20278H58Q52%20284%2052%20289Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMAIN-28%22%20d%3D%22M94%20250Q94%20319%20104%20381T127%20488T164%20576T202%20643T244%20695T277%20729T302%20750H315H319Q333%20750%20333%20741Q333%20738%20316%20720T275%20667T226%20581T184%20443T167%20250T184%2058T225%20-81T274%20-167T316%20-220T333%20-241Q333%20-250%20318%20-250H315H302L274%20-226Q180%20-141%20137%20-14T94%20250Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMAIN-2212%22%20d%3D%22M84%20237T84%20250T98%20270H679Q694%20262%20694%20250T679%20230H98Q84%20237%2084%20250Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMAIN-31%22%20d%3D%22M213%20578L200%20573Q186%20568%20160%20563T102%20556H83V602H102Q149%20604%20189%20617T245%20641T273%20663Q275%20666%20285%20666Q294%20666%20302%20660V361L303%2061Q310%2054%20315%2052T339%2048T401%2046H427V0H416Q395%203%20257%203Q121%203%20100%200H88V46H114Q136%2046%20152%2046T177%2047T193%2050T201%2052T207%2057T213%2061V578Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMATHI-6B%22%20d%3D%22M121%20647Q121%20657%20125%20670T137%20683Q138%20683%20209%20688T282%20694Q294%20694%20294%20686Q294%20679%20244%20477Q194%20279%20194%20272Q213%20282%20223%20291Q247%20309%20292%20354T362%20415Q402%20442%20438%20442Q468%20442%20485%20423T503%20369Q503%20344%20496%20327T477%20302T456%20291T438%20288Q418%20288%20406%20299T394%20328Q394%20353%20410%20369T442%20390L458%20393Q446%20405%20434%20405H430Q398%20402%20367%20380T294%20316T228%20255Q230%20254%20243%20252T267%20246T293%20238T320%20224T342%20206T359%20180T365%20147Q365%20130%20360%20106T354%2066Q354%2026%20381%2026Q429%2026%20459%20145Q461%20153%20479%20153H483Q499%20153%20499%20144Q499%20139%20496%20130Q455%20-11%20378%20-11Q333%20-11%20305%2015T277%2090Q277%20108%20280%20121T283%20145Q283%20167%20269%20183T234%20206T200%20217T182%20220H180Q168%20178%20159%20139T145%2081T136%2044T129%2020T122%207T111%20-2Q98%20-11%2083%20-11Q66%20-11%2057%20-1T48%2016Q48%2026%2085%20176T158%20471L195%20616Q196%20629%20188%20632T149%20637H144Q134%20637%20131%20637T124%20640T121%20647Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMAIN-2217%22%20d%3D%22M229%20286Q216%20420%20216%20436Q216%20454%20240%20464Q241%20464%20245%20464T251%20465Q263%20464%20273%20456T283%20436Q283%20419%20277%20356T270%20286L328%20328Q384%20369%20389%20372T399%20375Q412%20375%20423%20365T435%20338Q435%20325%20425%20315Q420%20312%20357%20282T289%20250L355%20219L425%20184Q434%20175%20434%20161Q434%20146%20425%20136T401%20125Q393%20125%20383%20131T328%20171L270%20213Q283%2079%20283%2063Q283%2053%20276%2044T250%2035Q231%2035%20224%2044T216%2063Q216%2080%20222%20143T229%20213L171%20171Q115%20130%20110%20127Q106%20124%20100%20124Q87%20124%2076%20134T64%20161Q64%20166%2064%20169T67%20175T72%20181T81%20188T94%20195T113%20204T138%20215T170%20230T210%20250L74%20315Q65%20324%2065%20338Q65%20353%2074%20363T98%20374Q106%20374%20116%20368T171%20328L229%20286Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMATHI-63%22%20d%3D%22M34%20159Q34%20268%20120%20355T306%20442Q362%20442%20394%20418T427%20355Q427%20326%20408%20306T360%20285Q341%20285%20330%20295T319%20325T330%20359T352%20380T366%20386H367Q367%20388%20361%20392T340%20400T306%20404Q276%20404%20249%20390Q228%20381%20206%20359Q162%20315%20142%20235T121%20119Q121%2073%20147%2050Q169%2026%20205%2026H209Q321%2026%20394%20111Q403%20121%20406%20121Q410%20121%20419%20112T429%2098T420%2083T391%2055T346%2025T282%200T202%20-11Q127%20-11%2081%2037T34%20159Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMAIN-5B%22%20d%3D%22M118%20-250V750H255V710H158V-210H255V-250H118Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMAIN-5D%22%20d%3D%22M22%20710V750H159V-250H22V-210H119V710H22Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMAIN-29%22%20d%3D%22M60%20749L64%20750Q69%20750%2074%20750H86L114%20726Q208%20641%20251%20514T294%20250Q294%20182%20284%20119T261%2012T224%20-76T186%20-143T145%20-194T113%20-227T90%20-246Q87%20-249%2086%20-250H74Q66%20-250%2063%20-250T58%20-247T55%20-238Q56%20-237%2066%20-225Q221%20-64%20221%20250T66%20725Q56%20737%2055%20738Q55%20746%2060%20749Z%22%3E%3C%2Fpath%3E%0A%3C%2Fdefs%3E%0A%3Cg%20stroke%3D%22currentColor%22%20fill%3D%22currentColor%22%20stroke-width%3D%220%22%20transform%3D%22matrix(1%200%200%20-1%200%200)%22%20aria-hidden%3D%22true%22%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMATHI-66%22%20x%3D%220%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%3Cg%20transform%3D%22translate(490%2C-150)%22%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-69%22%20x%3D%220%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-2C%22%20x%3D%22345%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-6A%22%20x%3D%22624%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%3C%2Fg%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMAIN-3D%22%20x%3D%221601%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMATHI-6D%22%20x%3D%222657%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMATHI-61%22%20x%3D%223535%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMATHI-78%22%20x%3D%224065%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMAIN-28%22%20x%3D%224637%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%3Cg%20transform%3D%22translate(5027%2C0)%22%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMATHI-66%22%20x%3D%220%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%3Cg%20transform%3D%22translate(490%2C-150)%22%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-69%22%20x%3D%220%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-2212%22%20x%3D%22345%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-31%22%20x%3D%221124%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-2C%22%20x%3D%221624%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-6A%22%20x%3D%221903%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%3C%2Fg%3E%0A%3C%2Fg%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMAIN-2C%22%20x%3D%227255%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%3Cg%20transform%3D%22translate(7700%2C0)%22%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMATHI-66%22%20x%3D%220%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%3Cg%20transform%3D%22translate(490%2C-187)%22%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-69%22%20x%3D%220%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-2212%22%20x%3D%22345%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-31%22%20x%3D%221124%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-2C%22%20x%3D%221624%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-6A%22%20x%3D%221903%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-2212%22%20x%3D%222315%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-6B%22%20x%3D%223094%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-2217%22%20x%3D%223615%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-63%22%20x%3D%224116%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-5B%22%20x%3D%224549%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMATHI-69%22%20x%3D%224828%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20transform%3D%22scale(0.707)%22%20xlink%3Ahref%3D%22%23E1-MJMAIN-5D%22%20x%3D%225173%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%3C%2Fg%3E%0A%3C%2Fg%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMAIN-2217%22%20x%3D%2212368%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMATHI-6B%22%20x%3D%2213091%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%20%3Cuse%20xlink%3Ahref%3D%22%23E1-MJMAIN-29%22%20x%3D%2213612%22%20y%3D%220%22%3E%3C%2Fuse%3E%0A%3C%2Fg%3E%0A%3C%2Fsvg%3E)
复杂度是 *K)%3C%2Ftitle%3E%0A%3Cdefs%20aria-hidden%3D%22true%22%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMATHI-4F%22%20d%3D%22M740%20435Q740%20320%20676%20213T511%2042T304%20-22Q207%20-22%20138%2035T51%20201Q50%20209%2050%20244Q50%20346%2098%20438T227%20601Q351%20704%20476%20704Q514%20704%20524%20703Q621%20689%20680%20617T740%20435ZM637%20476Q637%20565%20591%20615T476%20665Q396%20665%20322%20605Q242%20542%20200%20428T157%20216Q157%20126%20200%2073T314%2019Q404%2019%20485%2098T608%20313Q637%20408%20637%20476Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMAIN-28%22%20d%3D%22M94%20250Q94%20319%20104%20381T127%20488T164%20576T202%20643T244%20695T277%20729T302%20750H315H319Q333%20750%20333%20741Q333%20738%20316%20720T275%20667T226%20581T184%20443T167%20250T184%2058T225%20-81T274%20-167T316%20-220T333%20-241Q333%20-250%20318%20-250H315H302L274%20-226Q180%20-141%20137%20-14T94%20250Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMATHI-4E%22%20d%3D%22M234%20637Q231%20637%20226%20637Q201%20637%20196%20638T191%20649Q191%20676%20202%20682Q204%20683%20299%20683Q376%20683%20387%20683T401%20677Q612%20181%20616%20168L670%20381Q723%20592%20723%20606Q723%20633%20659%20637Q635%20637%20635%20648Q635%20650%20637%20660Q641%20676%20643%20679T653%20683Q656%20683%20684%20682T767%20680Q817%20680%20843%20681T873%20682Q888%20682%20888%20672Q888%20650%20880%20642Q878%20637%20858%20637Q787%20633%20769%20597L620%207Q618%200%20599%200Q585%200%20582%202Q579%205%20453%20305L326%20604L261%20344Q196%2088%20196%2079Q201%2046%20268%2046H278Q284%2041%20284%2038T282%2019Q278%206%20272%200H259Q228%202%20151%202Q123%202%20100%202T63%202T46%201Q31%201%2031%2010Q31%2014%2034%2026T39%2040Q41%2046%2062%2046Q130%2049%20150%2085Q154%2091%20221%20362L289%20634Q287%20635%20234%20637Z%22%3E%3C%2Fpath%3E%0A%3Cpath%20stroke-width%3D%221%22%20id%3D%22E1-MJMAIN-2217%22%20d%3D%22M229%20286Q216%20420%20216%20436Q216%20454%20240%20464Q241%20464%20245%20464T251<p)
以上是关于SNOI 2017 题解的主要内容，如果未能解决你的问题，请参考以下文章