DESAMIS Go Training Season 1 Day 2

by Yutaka Kato

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(Pݚमୈظ %": :VUBLB,BUP   3% %&4".*4 %&4".*4ࣾ಺ݚम

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ຊ೔ͷΰʔϧ w 🚩ΰʔϧ w (Pͷ։ൃʹඞཁͳಓ۩Λἧ͑Δ w ಓ۩ͷجຊతͳ࢖͍ํΛशಘ͢Δ w ❌ΰʔϧͰ͸ͳ͍ w ݴޠͷߏจ΍ػೳΛशಘ͢Δ

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ݚमܭը ճ ೔࣍ ༧ఆ λΠτϧ ୈճ Ր (Pͷجຊ ୈճ Ր ؀ڥߏஙͱ(JU (JU)VCͷجຊ ୈճ Ր جຊߏจ ୈճ Ր ߏ଄ମɺεϥΠεɺϚοϓ ୈճ Ր ඪ४ϥΠϒϥϦ͸΍Ί͙Γ ୈճ Ր ϞδϡʔϧγεςϜͱ֎෦ϥΠϒϥϦ ୈճ Ր )FSPLV(Pೖ໳ ୈճ Ր "84-BNCEB(Pೖ໳ ୈճ Ր ฒߦॲཧϓϩάϥϛϯά ୈճ Ր ୯ମςετٕ๏ ୈճ Ր σʔλϕʔεΞΫηε ୈճ Ր 'ZOFʹΑΔ(6*ΞϓϦέʔγϣϯ։ൃ ୈճ Ր ࣾ಺(PϓϩδΣΫτͷίʔυղઆ

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࣮ࢪҊ಺ w ຊݚमͷશࢀՃऀͷ04͕8JOEPXTͩͬͨͨ ΊɺNBD04΍-JOVYͷઆ໌͸ল͖·͢ w ༻ҙͨ͠(JU)VCΞΧ΢ϯτʹϩάΠϯͰ͖Δ͜ ͱ '"ͷ४උ౳ Λ֬ೝ͍ͯͩ͘͠͞ w ಋೖ͢Διϑτ΢ΣΞ͕طʹ1$ʹಋೖࡁͷ৔߹ ͸ͦͷखॱΛεΩοϓͰ͖·͕͢ɺઃఆ΍όʔ δϣϯࠩҟʹෆ͕҆͋Δ৔߹͸Ұ౓ΞϯΠϯε τʔϧ͔ͯ͠ΒຊखॱΛ࣮ࢪ͍ͯͩ͘͠͞

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؀ڥߏங

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खॱ֓ཁ (Pͷಋೖ 74$PEFͷಋೖ (JUGPS8JOEPXTͷಋೖ ֦ுػೳͷಋೖ ϦϙδτϦͷෳ੡ ίʔυͷࣥචͱ൓ө ʲ஫ҙʳ   ͜ͷॱংΛݫक   ͍ͯͩ͘͠͞ʂ

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(Pͷಋೖ ᶃ ϒϥ΢βΛىಈ͠ɺIUUQTHPMBOHPSHΛ։͍͍ͯͩ͘͞ ᶄ <%PXOMPBE(P>ϦϯΫΛΫϦοΫ͍ͯͩ͘͠͞ 1 2

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(Pͷಋೖ ᶃ .JDSPTPGU8JOEPXTͱॻ͔Εͨ࿮͔ΒNTJͷϦϯΫΛ։͍ͯ   ͍ͩ͘͞ 1 ʲඋߟʳ ຊݚम͸HPܥΛ૝ఆ͠ ͍ͯ·͢   ύονόʔδϣϯ͸ҟͳͬͯ ͍ͯ΋ߏ͍·ͤΜ

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(Pͷಋೖ ᶃ μ΢ϯϩʔυ͞ΕͨϑΝΠϧΛ։͍͍ͯͩ͘͞ 1

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(Pͷಋೖ ᶃ Πϯετʔϥʔ͕ىಈ͢ΔͷͰɺΛΫϦοΫɺͦͷޙ   ͷը໘΋શͯͦͷ··ͱ<*OTUBMM>ͰਐΊ͍ͯͩ͘͞ 1 ʲඋߟʳ ৽͍͠όʔδϣϯͷ(PΛೖ ΕΔ৔߹͸ɺઌʹݹ͍΄͏Λ ΞϯΠϯετʔϧ͢Δ͜ͱΛ ͓͢͢Ί͠·͢

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(Pͷಋೖ ᶃ શ͕ͯ͏·͍ͬͨ͘Β׬ྃը໘ʹͳΔͷͰɺ<'JOJTI>Λ   ΫϦοΫ͍ͯͩ͘͠͞ 1 ʲิ଍ʳ εΫϦʔϯγϣοτʹ͋Δ lzͱ͋Δͱ͜Ζ͸ɺօ͞ Μͷ؀ڥͰ͸lBNEzʹͳ Δ͸ͣͰ͢

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(Pͷಋೖ ᶃ 8JOEPXTϘλϯΛӈΫϦοΫ͍ͯͩ͘͠͞ ᶄ 8JOEPXT1PXFS4IFMMΛ։͍͍ͯͩ͘͞ 1 ʲඋߟʳ ઃఆʹΑͬͯ͸1PXFS4IFMM ͷͱ͜Ζ͕lίϚϯυϓϩϯ ϓτzʹͳΓ·͢ɻͦΕΛ։ ͍͍ͯͩ͘͞ɻ 2

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(Pͷಋೖ ᶃ දࣔ͞Εͨը໘ʹʮHPWFSTJPOʯ&OUFSͱೖྗ͍ͯͩ͘͠͞ ᶄ ʮHPWFSTJPOHPYʜʯͱදࣔ͞ΕΕ͹ಋೖ͸੒ޭͰ͢ 1

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74$PEFͷಋೖ ᶃ ϒϥ΢βͰIUUQTDPEFWJTVBMTUVEJPDPNΛ։͍͍ͯͩ͘͞ ᶄ <%PXOMPBEGPS8JOEPXT>ϦϯΫΛ։͍͍ͯͩ͘͞ 1 2

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74$PEFͷಋೖ ᶃ μ΢ϯϩʔυͨ͠ϑΝΠϧΛ։͍͍ͯͩ͘͞ 1

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74$PEFͷಋೖ ᶃ ΠϯετʔϧઌΛ֬ೝ͠ɺ<࣍΁>ΛΫϦοΫ͍ͯͩ͘͠͞ ᶄ ࣍ͷը໘΋ͦͷ··<࣍΁>ΛΫϦοΫ͍ͯͩ͘͠͞ 1 2

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74$PEFͷಋೖ ᶃ ௥ՃλεΫΛ֬ೝ͠ɺ<࣍΁>ΛΫϦοΫ͍ͯͩ͘͠͞ ᶄ <Πϯετʔϧ>ΛΫϦοΫ͍ͯͩ͘͠͞ 1 2

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74$PEFͷಋೖ ᶃ 74$PEF͕ىಈ͢Ε͹੒ޭͰ͢ͷͰ<9>Ͱด͍ͯͩ͘͡͞   ΧελϚΠζཉ͸Ұ୴ԡ͠ཹΊ͍ͯͩ͘͞ 1

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(JUͷಋೖ ᶃ ϒϥ΢βͰIUUQTHJUGPSXJOEPXTPSHΛ։͍͍ͯͩ͘͞ ᶄ <%PXOMPBE>ϦϯΫΛΫϦοΫ͍ͯͩ͘͠͞ 1 2

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(JUͷಋೖ ᶃ μ΢ϯϩʔυͨ͠ϑΝΠϧΛ։͍͍ͯͩ͘͞ 1

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(JUͷಋೖ ᶃ 6"$ը໘͕ग़ͨΒ<͸͍>ΛΫϦοΫ͍ͯͩ͘͠͞ 1

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(JUͷಋೖ ᶃ ϥΠηϯε (1- Λ֬ೝ͠ɺΛΫϦοΫ͍ͯͩ͘͠͞ ᶄ ΠϯετʔϧઌΛ֬ೝ͠ɺΛΫϦοΫ͍ͯͩ͘͠͞ 1 2

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(JUͷಋೖ ᶃ ίϯϙʔωϯτΛ֬ೝ͠ɺΛΫϦοΫ͍ͯͩ͘͠͞ ᶄ ελʔτϝχϡʔઃఆΛ֬ೝ͠ɺΛΫϦοΫ͍ͯͩ͘͠͞ 1 2

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(JUͷಋೖ ᶃ ΤσΟλʔઃఆը໘ʹͳΔͷͰ<6TF7JTVBM4UVEJP$PEFBT   (JU`TEFGBVMUFEJUPS>Λબ୒͍ͯͩ͘͠͞ ᶄ ΛΫϦοΫ͍ͯͩ͘͠͞ 1 2

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(JUͷಋೖ ᶃ ৽͍͠ϦϙδτϦͷॳظϒϥϯν໊ઃఆը໘ʹͳΔͷͰ   <0WFSSJEFUIFEFGBVMUCSBODIOBNFʜ>Λબ୒͍ͯͩ͘͠͞ ᶄ ΛΫϦοΫ͍ͯͩ͘͠͞ 1 2 ʲඋߟʳ (JU)VCΛ࢖͏৔߹ɺ৽نϦ ϙδτϦͷσϑΥϧτϒϥϯ ν͸NBJOʹͳΓ·ͨ͠ (JU΋͜Εʹ߹Θͤ·͢

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(JUͷಋೖ ᶃ ͔͜͜Βઌ͸શͯσϑΥϧτͰߦ͖·͕͢ɺσϑΥϧτ஋ͷ֬ೝ   ͷͨΊεΫϦʔϯγϣοτΛఴ͓͖͑ͯ·͢ 1 1

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(JUͷಋೖ ᶃ σϑΥϧτͷ··ਐΊ·͢ 1 1

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(JUͷಋೖ ᶃ σϑΥϧτͷ··ਐΊ·͢ 1 1

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(JUͷಋೖ ᶃ σϑΥϧτͷ··ਐΊ·͢ 1 1

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(JUͷಋೖ ᶃ <7JFX3FMFBTF/PUFT>ͷνΣοΫΛ֎͍ͯͩ͘͠͞ ᶄ <'JOJTI>ΛΫϦοΫ͍ͯͩ͘͠͞ 1 2

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֦ுػೳͷಋೖ ᶃ ελʔτϘλϯΛΫϦοΫ͍ͯͩ͘͠͞ ᶄ 7JTVBM4UVEJP$PEFΛ୳ͯ͠ىಈ͍ͯͩ͘͠͞ 1 2

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֦ுػೳͷಋೖ ᶃ ը໘ࠨखͷ&YUFOTJPOTΞΠίϯΛΫϦοΫ͠·͢ ᶄ ݕࡧ૭ʹʮ+BQBOʯͱೖྗ͠·͢ ᶅ +BQBOFTF-BOHVBHF1BDLΛݟ͚ͭ<*OTUBMM>ΛΫϦοΫ͠·͢ 1 3

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֦ுػೳͷಋೖ ᶃ ݕࡧ૭ʹʮ(Pʯͱೖྗ͠ʮ(Pʯ֦ுػೳΛݟ͚ͭ·͢ ᶄ <*OTUBMM>ΛΫϦοΫ͠·͢ 1 2

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֦ுػೳͷಋೖ ᶃ ݕࡧ૭ʹʮ(JU)VCʯͱೖྗ͠ʮ(JU)VC1VMM3FRVFTUTBOE   *TTVFTʯ֦ுػೳΛݟ͚ͭ·͢ ᶄ <*OTUBMM>ΛΫϦοΫ͠·͢ 1 2

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֦ுػೳͷಋೖ ᶃ ը໘ӈԼʹ<3FTUBSU>Ϙλϯ͕͋Δ͸ͣͳͷͰΫϦοΫ͠·͢ 1

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֦ுػೳͷಋೖ ࠶ىಈͨ͠74$PEF͕೔ຊޠʹͳ͍ͬͯΕ͹੒ޭͰ͢

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ϦϙδτϦͷෳ੡ ᶃ ը໘ʹ͋Δ<ϦϙδτϦͷෳ੡>ϘλϯΛΫϦοΫ͍ͯͩ͘͠͞ ᶄ <(JU)VC͔Βෳ੡>ΛΫϦοΫ͍ͯͩ͘͠͞ 1 2

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ϦϙδτϦͷෳ੡ ᶃ ը໘ʹ͋Δ<ϦϙδτϦͷෳ੡>ϘλϯΛΫϦοΫ͍ͯͩ͘͠͞ ᶄ <(JU)VC͔Βෳ੡>ΛΫϦοΫ͍ͯͩ͘͠͞ ᶅ μΠΞϩά͕ग़ͨΒ<ڐՄ>ΛΫϦοΫ͍ͯͩ͘͠͞ 3 1 2

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ϦϙδτϦͷෳ੡ ᶃ ϒϥ΢β͕ىಈ͠։͍ͨϖʔδͰ<$POUJOVF>ΛΫϦοΫ͠·͢ ᶄ ·ͩ(JU)VCʹϩάΠϯ͍ͯ͠ͳ͚Ε͹ϩάΠϯ͠ɺೝՄը໘ʹ   ભҠͨ͠Β<"VUIPSJ[F(JU)VC>ΛΫϦοΫ͠·͢ 2 1

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ϦϙδτϦͷෳ੡ ᶃ ϒϥ΢βͰμΠΞϩά͕ग़ͨΒࢦࣔʹै͍ͬͯͩ͘͞ ᶄ 74$PEFͰμΠΞϩά͕ग़ͨΒ<։͘>ΛΫϦοΫ͍ͯͩ͘͠͞ 2 1

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ϦϙδτϦͷෳ੡ ᶃ ϑΥʔΧε͞ΕͨೖྗཝʹʮVNPUJPOHPUSBJOJOHʯͱೖྗɺ   ֘౰ϦϙδτϦ͕ݟ͔ͭͬͨΒΫϦοΫ͍ͯͩ͘͠͞ 1

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ϦϙδτϦͷෳ੡ ᶃ ίʔυͷෳ੡ઌΛฉ͔ΕΔͷͰɺϗʔϜσΟϨΫτϦҎԼʹ   ʮHPʯʮTSDʯʮHJUIVCDPNʯʮVNPUJPOʯ   ͱϑΥϧμΛ࡞੒ɺͦͷϑΥϧμʹೖ͍ͬͯͩ͘͞ 1

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ϦϙδτϦͷෳ੡ ᶃ <ϦϙδτϦͷ৔ॴΛબ୒>ΛΫϦοΫ͍ͯͩ͘͠͞ ᶄ ͠͹Β͘଴ͭͱෳ੡͕ऴΘΔͷͰ<։͘>ΛΫϦοΫ͍ͯͩ͘͠͞ 1 2

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ϦϙδτϦͷෳ੡ ᶃ ը໘ࠨԼͷͱ͍͏ϥϕϧΛΫϦοΫ͍ͯͩ͘͠͞ ᶄ <ʴ৽͍͠෼ذͷ࡞੒ʜ>ΛΫϦοΫ͍ͯͩ͘͠͞ 1 2

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ϦϙδτϦͷෳ੡ ᶃ ϑΥʔΧε͞ΕͨೖྗཝʹʮϢʔβʔ໊QSBDUJDFʯͱೖྗɺ   ͦͷޙ&OUFSΛೖྗ͍ͯͩ͘͠͞ ྫNJLBOQSBDUJDF 1

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ίʔυͷࣥචͱ൓ө ᶃ ࠨϝχϡʔͰΤΫεϓϩʔϥʔΛ։͍͍ͯͩ͘͞ ᶄ Ϣʔβʔ໊ͰϑΥϧμΛ࡞͍ͬͯͩ͘͞ ྫNJLBO 1 2

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ίʔυͷࣥචͱ൓ө ᶃ ࡞ͬͨϑΥϧμΛӈΫϦοΫͯ͠දࣔ͞ΕΔϝχϡʔͰ   <౷߹λʔϛφϧͰ։͘>Λબ୒͍ͯͩ͘͠͞ 1

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ίʔυͷࣥචͱ൓ө ᶃ දࣔ͞ΕͨλʔϛφϧͰʮgo mod initʯʻ&OUFSʼΛೖྗ   ͍ͯͩ͘͠͞ 1

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ίʔυͷࣥචͱ൓ө ᶃ ʮgit config --global user.name "͋ͳͨͷ໊લ"ʯʻ&OUFSʼ ᶄ ʮgit config --global user.email ϝʔϧΞυϨεʯʻ&OUFSʼ 1 2 ʲิ଍ʳ ͜ͷ࡞ۀ͸௨ৗ(JUΛΠϯε τʔϧͨ͠ޙʹ౓͚࣮ͩߦ ͢Δ͚ͩͰߏ͍·ͤΜ

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ίʔυͷࣥචͱ൓ө ᶃ Ϣʔβʔ໊ϑΥϧμҎԼʹʮEBZIFMMPʯϑΥϧμΛɺͦͷԼʹ   ʮNBJOHPʯϑΝΠϧΛ࡞੒͍ͯͩ͘͠͞ ᶄ (P֦ுػೳ͕ग़͢ը໘Ͱ<*OTUBMM"MM>ΛΫϦοΫ͍ͯͩ͘͠͞ 1 2 ʲิ଍ʳ <*OTUBMM"MM>͸੩తղੳπʔ ϧͳͲΛಋೖ͠·͢ ͠͹Β͕͔͔࣌ؒ͘Γ·͢

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ίʔυͷࣥචͱ൓ө ᶃ ʮ"MMUPPMTTVDDFTTGVMMZJOTUBMMFEʯදࣔΛ֬ೝ͍ͯͩ͘͠͞ ᶄ (P֦ுػೳͷλϒΛ<9>Ͱด͍ͯͩ͘͡͞ 2 1 ʲิ଍ʳ <*OTUBMM"MM>͸੩తղੳπʔ ϧͳͲΛಋೖ͠·͢ ͠͹Β͕͔͔࣌ؒ͘Γ·͢

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ίʔυͷࣥචͱ൓ө ᶃ ڭՊॻ1ʹ͋ΔϓϩάϥϜΛࣸܦ͠ɺอଘ͍ͯͩ͘͠͞ 1

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ίʔυͷࣥචͱ൓ө ᶃ λʔϛφϧλϒʹ੾Γସ͍͑ͯͩ͘͞ ᶄ ʮgo run day2-hello/main.goʯͰίʔυΛ࣮ߦ͍ͯͩ͘͠͞ 2 1

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ίʔυͷࣥචͱ൓ө ᶃ ࠨϝχϡʔͷ<ιʔε؅ཧ>ΞΠίϯΛΫϦοΫ͍ͯͩ͘͠͞ ᶄ <มߋ>ϖΠϯͷ<ʴ>ϘλϯΛΫϦοΫ͍ͯͩ͘͠͞ ᶅ <㾎>ΛΫϦοΫ͠ɺίϛοτϝοηʔδΛೖΕͯʻ&OUFSʼ 1 2 ３

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ίʔυͷࣥචͱ൓ө ᶃ ը໘ӈԼͷϒϥϯν໊ͷӈʹ͋ΔൃߦΞΠίϯΛΫϦοΫ͠·͢ ᶄ ֦ுػೳͷը໘Ͱ<$SFBUF1VMM3FRVFTUʜ>ΛΫϦοΫ͠·͢ 1 2

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ίʔυͷࣥචͱ൓ө ᶃ ϓϧϦΫը໘Λ֬ೝ͠<$SFBUF>ϘλϯΛΫϦοΫ͠·͢ ᶄ ϓϧϦΫ͕࡞੒͞Ε·ͨ͠ʂ 1

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ίʔυͷࣥචͱ൓ө (JU)VC্Ͱ΋ϓϧϦΫ͕࡞੒͞Ε͍ͯΔ͜ͱΛ֬ೝͰ͖·͢   ϓϧϦΫ͕ϨϏϡʔ͞Εɺ߹֨͢Ε͹NBJOʹ൓ө͞Ε·͢

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͕࣌ؒ༨ͬͨΒʜ w ڭՊॻͷୈষͷ࿅श໰୊Λղ͍ͯΈ͍ͯͩ͘͞ w ࣮ࢪ೔ͱ໰୊͝ͱʹϑΥϧμΛΘ͚ͯͩ͘͞ ͍ ྫEBZFY w దٓίϛοτɾࣗ෼ͷϒϥϯν΁ͷϓογϡΛ ͓ئ͍͠·͢

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࣍ճ༧ࠂ w ࣍ճ͸ʮجຊߏจʯͰ͢ w ڭՊॻ ϓϩάϥϛϯάݴޠ(P Λͨ͘͞Μ࢖ ͏ͷͰɺ๨Εͳ͍Α͏ʹ͍ͯͩ͘͠͞ w ෼͔Βͳ͔ͬͨͱ͜Ζ΍࣭໰ͳͲ͸ɺࣾ಺ 4MBDLHPQIFSTνϟϯωϧʹ౤ߘ͍ͩ͘͞