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競技プログラミングで 基礎体力を身につけよう / You can get basic skil...

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November 27, 2024
Programming
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競技プログラミングで 基礎体力を身につけよう / You can get basic skills through competitive programming

関ジャバ'24 11月度 #kanjava

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mdstoy

November 27, 2024
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Transcript

  1. ڝٕϓϩάϥϛϯάͰ جૅମྗΛ਎ʹ͚ͭΑ͏ ؔδϟό݄౓LBOKBWB  ෢ా๛࢙ 1

  2. ෢ా๛࢙ !NETUPZ  גࣜձࣾ3JTF6Q +BWB͕޷͖ͳϓϩάϥϚʔ ओͳ࣮੷ɿؔδϟόͰՎ͏ɺ%BODF%BODF3FWPMVUJPOͰશࠃҰҐ ࣗݾ঺հ 2

  3. ՎͬͯགྷΕΔϓϩάϥϚʔ

  4. 4 ;FSPUP)FSP

  5. 5 ஌ͷߴ଎ಓ࿏

  6. 6 ஌ͷߴ଎ಓ࿏ ߴ଎ಓ࿏Λ௨Ε͹ ୭Ͱ΋)FSPʹͳΕΔʁ

  7. 7 ஌ͷߴ଎ಓ࿏ ͦΜͳ͜ͱ͕Ͱ͖ͨΒ ୭΋ۤ࿑͍ͯ͠ͳ͍

  8. 8 ஌ͷߴ଎ಓ࿏ ΋ͱ΋ͱ͸ɺ஌ͷߴ଎ಓ࿏Λ ൈ͚ͨ͋ͱʹौ଺͕͋Δͱ͍͏࿩

  9. 9 ஌ͷߴ଎ಓ࿏ ͦ΋ͦ΋അྗ͕ͳ͍ͱ ߴ଎ಓ࿏ʹ৐Δ͜ͱ͸Ͱ͖·ͤΜ

  10. 10 ஌ͷߴ଎ಓ࿏ ·ͣߴ଎ಓ࿏Λ૸ΕΔΑ͏ʹ جૅମྗΛ͚ͭ·͠ΐ͏

  11. 11 ڝٕϓϩάϥϛϯάͰ جૅମྗΛ਎ʹ͚ͭΑ͏

  12. 12 ڝٕϓϩάϥϛϯάͱ͸

  13. 13 ʢ஫ҙɿۀ຿ϓϩάϥϚʔ޲͚ʹิਖ਼͍ͯ͠·͢ʣ ཁ݅ɾ࢓༷͕౉͞ΕΔͷͰ ͦΕʹԊͬͨϓϩάϥϜΛॻ͍ͯೲ඼͢Δ ൃ஫ଆ͕͋Β͔͡Ί༻ҙ͍ͯͨ͠ςετέʔε͕ ΦʔϧάϦʔϯʹͳΕ͹͓͚ͬʔ ʢͨͩ͠ςετέʔεͷৄࡉ͸Θ͔Βͳ͍ʣ ڝٕϓϩάϥϛϯάͱ͸

  14. 14 ʢ஫ҙɿۀ຿ϓϩάϥϚʔ޲͚ʹิਖ਼͍ͯ͠·͢ʣ ࣮ߦ଎౓ʢେ఍͸ʙඵʣ΍ Ϧιʔεͷ੍ݶʢେ఍͸ϝϞϦ࢖༻ྔʣ ͳͲͷ͍ΘΏΔඇػೳཁ݅΋͋Δ ˢಈ͚͹͍͍ɺͱ͸ͳΒͳ͍ ڝٕϓϩάϥϛϯάͱ͸

  15. 15 ໰୊ͷྫ

  16. 16 ໰୊ɿӳখจࣈٴͼAA͔ΒͳΔจࣈྻ4͕༩͑ΒΕ·͢ɻ4͔ΒAAΛ͢ ΂ͯ࡟আͨ͠จࣈྻΛٻΊ͍ͯͩ͘͞ɻ ੍໿ɿ4͸ӳখจࣈٴͼAA͔ΒͳΔ௕͞Ҏ্ҎԼͷจࣈྻ ೖྗྫɿlTBEGXFGHFSXFGFz ग़ྗྫɿlTBEGXFGHFSXFGFz ग़యɿIUUQTBUDPEFSKQDPOUFTUTBCDUBTLTBCD@B

  17. 17 ճ౴ྫ

  18. 18 +BWBͪΌ͏Μ͔͍ʂʁ

  19. 19

  20. 20

  21. 21 +BWB͸৭ΜͳҙຯͰʮ஗͍ʯ ʢ͜ͷจ຺ʹ͓͍ͯʣ

  22. 22 هड़͕Ͳ͏ͯ͠΋৑௕ʹͳΔͷͰ࣮૷଎౓Ͱෛ͚Δ *%&Ͱ͔ͳΓָʹͳΔͱ͸͍͑  ೖྗΛड͚औΔͨΊʹ࢖͏KBWBVUJM4DBOOFS͕ॏ͍ 4ZTUFNPVUΛͦͷ··ग़ྗʹ࢖͏ͷ΋ॏ͍ ˡݱ࣮తʹ͸ɺೖྗ͸KBWBJP*OQVU4USFBNͳͲΛ࢖ͬͯ ௿Ϩϕϧ࣮૷Λ͢Δඞཁ͕͋Δ ग़ྗ΋1SJOU8SJUFSͳͲͰϥοϓ͢Δඞཁ͕͋Δ +BWB͸৭ΜͳҙຯͰʮ஗͍ʯ

  23. 23 ͍ΖΜͳ՝୊ʹऔΓ૊Ήͱ ࣗવʹݴޠ࢓༷΍ϥΠϒϥϦͷಛੑʹ΋ ৄ͘͠ͳΕ·͢

  24. 24 ͪΐͬͱ೉͍͠໰୊ͷྫ

  25. 25 ग़యɿIUUQTBUDPEFSKQDPOUFTUTBCDUBTLTBCD@D

  26. 26 ౰ͨΓલ͕ͩɺᐆດͳهड़͸ڐ͞Εͳ͍

  27. 27 ग़యɿIUUQTBUDPEFSKQDPOUFTUTBCDUBTLTBCD@D

  28. 28 ۪௚ʹ΍ͬͯΈΔ

  29. 29 ۪௚ʹ΍Δͱɺ0 /? ͷ ܭࢉྔ͕ඞཁͱͳΔͷͰ / ͷͱ͖ඵͰऴΘΒͳ͍

  30. 30 ग़ݱҐஔΛ͓֮͑ͯ͘

  31. 31 ҰॏϧʔϓͰࡁΉͷͰ େৎ෉ʹͳΓ·ͨ͠

  32. 32 ڝٕϓϩάϥϛϯάΛ΍͍ͬͯΔ ͱɺͦͷΑ͏ͳσʔλྔͱܭࢉྔͷ ײ͕֮ࣗવʹ਎ʹ͍͍͖ͭͯ·͢

  33. 33 ڝٕϓϩάϥϛϯάܦݧऀΛ εΧ΢τର৅ͱ͞Ε͍ͯΔاۀʹ ΧδϡΞϧ໘ஊʹݴͬͨͱ͖ͷҰίϚ

  34. 34 ʮࣗ෼͸਺ֶྗ͕ͦ͜·Ͱ༏Ε͍ͯΔΘ͚Ͱ͸ͳ͍ͷͰ ೉͍͠໰୊͸ख͕ग़ͳ͍ͷͰ͕͢େৎ෉Ͱ͔͢ʁʯ ʮͦ͜·Ͱ೉͍͠໰୊͕ղ͚ͳ͘ͱ΋ܭࢉྔʹର͢Δײ ֮Λਖ਼࣋ͨ͘͠Ε͍ͯΔ͜ͱ͸҆৺ײʹܨ͕Γ·͢ʯ

  35. 35 ʮ਺ઍ݅΍ͦ͜ΒͰɺσʔλྔ͕ଟ͍ ͔Β஗͘ͳΔͷ͸࢓ํͳ͍ͬͯݴΘΕ ͯ΋ࠔΓ·͔͢ΒͶʯ

  36. 36 ਎ۙͳ໰୊ͷྫ

  37. 37 &YDFMͷྻͰOOO൪໨ͷྻͷ ΞϧϑΝϕοτͬͯԿʁ ࠷ۙ5XJUUFSʢݱ9ʣͰ࿩୊ʹͳͬͯ·ͨ͠

  38. 38 ग़యɿIUUQTBUDPEFSKQDPOUFTUTBCDUBTLTBCD@D

  39. 39 ਐ๏ͦͷ΋ͷͰ͸ͳ͍͚Ͳ ਐ๏͔Βਐ๏΁ͷม׵͕Ͱ͖͑͢͞Ε͹ ͋ͱ͸ͪΐͬͱͨ͠Ԡ༻Ͱղ͚·͢ Ͱׂͬͨ͋·Γ͕ͳΒ"ɺͳΒ#ͱͳΓ·͕͢ ͋·Γ͕ͷͱ͖;ʹͳΔ͜ͱʹؾ͚ͮ͹Α͍

  40. 40 ʢਐ๏Λਐ๏ʹม׵͠ΖͱݴΘΕͯ ͙͢Ͱ͖·͔͢ʁʣ

  41. 41 ڝٕϓϩάϥϛϯάΛ΍͍ͬͯΔͱ ͦ͏͍͏ྨͷ໰୊͸ࢁఔ͋Γ·͢ ͍࣋ͬͯͳͯ͘΋ࢮʹ͸͠ͳ͍͕ ͍࣋ͬͯΔͱ͍͟ͱ͍͏ͱ͖ʹॿ͔Δಓ۩͕૿͑Δ ଍ࠊ͕஁͑ΒΕΔ

  42. 42 ௚઀ͦͷΑ͏ͳ໰୊Λ ۀ຿Ͱղ͚ͱ͍͏͜ͱ͸ى͜Βͳ͍͕ ղܾ͍ͨ͠໰୊ͷ෦෼໰୊ͱͯ͠ ग़ݱ͢Δ͜ͱ͸े෼͋Γ͑·͢

  43. 43 ʢ༨ஊɿͪΐͬͱҧ͏͚Ͳ ৘ใॲཧٕज़ऀࢼݧͳΜ͔΋ ଍ࠊΛ஁͑Δͱ͍͏ҙຯͰඇৗʹ༗༻ʣ

  44. 44 ͪͳΈʹ

  45. 45 ʢ&YDFMͷྻ൪߸ʹ͍ͭͯ͸ ࣮ࡍʹ&YDFMʹྻ൪߸Λ ॻ͍ͨ΄͏͕ૣ͍ʣ

  46. 46 ʮ͸΍͞ʯͬͯʁ

  47. 47 େࡶ೺ʹ෼͚ͯͭ ೲظʹؒʹ߹ΘͤΔʮૣ͞ʯ ࣮૷ͦͷ΋ͷͷʮ଎͞ʯ େࡶ೺͗͢Δͱ͍͏ҟ࿦͸ೝΊΔ 

  48. 48 ڝٕϓϩάϥϛϯάΛ΍͍ͬͯΔͱ ࣮૷ͷ଎͕ࣗ͞વʹ ਎ʹ͍͍͖ͭͯ·͢ ʢ·͞ʹےτϨʣ

  49. 49 ʮ଎͍ʯ͜ͱʹͦΜͳʹ ҙຯ͕͋Δ͔ʁ

  50. 50 ΊͪΌͪ͘Ό଎͘ͳΔͱ ΊͪΌͪ͘ΌΠςϨʔγϣϯ͕ ճͤΔΜͰ͢Αʢ࣮͸ʣ

  51. 51 ͋ͱɺσʔλߏ଄ͷ࿩ͱ͔ ͔͚ͨͬͨ͠Ͳ ͖Γ͕ͳ͍ͷͰলུ ڵຯͷ͋Δਓ͸ͥͻ ڝٕϓϩάϥϛϯά΍ͬͯΈ͍ͯͩ͘͞

  52. 52 ελοΫτϨʔεͷ ελοΫͬͯʁ

  53. 53 +BWBͰελοΫ΍ΩϡʔΛ ࢖͍͍ͨͱ͖͸ "SSBZ%FRVF Λ࢖͏ͷ͕Α͍