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LINE     > Kazuhiro Osawa / LINE Service Development Department1 2021 (  )

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> LINE  >    >  /  Agenda

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#01 LINE 

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      2190 300 2020/03/07

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> 6/$# $)% •Re-Challenge', > $# &$ 6/+ !#*5 > 94$$#  " $18 > #$7  * LINE0(.32-

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>   >     

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  https://www.youtube.com/watch?v=kpG3QSHCzPY https://www.slideshare.net/linecorp/line-80520817

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# !&' %   )" (    $

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> 81$# $*% •Re-Challenge(- > $# '$ 81, !#+7 > ;6$$#  " $3: > #$9  + LINE2)/54. & 0

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>   >       

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#02  

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> LINE%!;43+:  8* > $#"7  > 95&2'-6 >  %"&20,/51820, 1(.)-6*<  ?

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1    

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>  4 • *2,-)% 1,.(  3#3 +  > /'$!& •  .(, ,*2.(, 0*2.(, -)% /, "/, /  

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> ,*/(#5& > - +.$ +) .4  >  + 2'# > 3%1 0" !

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> $.    ,  > ()+  1 #"/ > & -'!*% !* ?

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> &/ *,%  > +3 (" ) > '!- 4 . # ↑ 12/5 → +0$

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#03 

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> )C#= *( •'%B •B!1.,  •-<)C)C&2= OK > >8+0 •46$ ?:8+9/ •=;3@233@  7"5A

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> → >-%>5&* 7 21 # +$)&*.6 ?  > ;" $- A6<@/9  80 '-*),B  =3!(-$)* 4.6:?

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> &2 3.9,-  > TDD8$ 0/7 > 4TDD(6 ' > 1+%#%%5!"%) :* 

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> &*  ! + >  !$& !( #.+ > !,4/'% > (OOP+ )  21)0 21  "-3 

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> %).*6!%3 > % *6 5',0*6 > % +.*6 #%*6 "$%2( > 2( 15',01 $/8 :&  >  4-  %9 4-  7

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> :7Web3!* &$2,FDQ > M=)%+#2%12"0? 12"0) %+ 9N6KDH!.2G4>5P7CK  > IJL@ S8B)%+;A   $(

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> LINE+32bQD48T • 75\ (30ZY[; ! > K9dH=-)/'3)"?`^ "RM • X-)/'3)^ D4 K9dB • 0O"_  1<-)/^  • 6L^J YUaC*$2#%/ V   > :AdIcS  • HGEW"F • .1,&@P 1&N> ] D4

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#04 

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1    

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>  6 • ,4,/+'"3,0*  3%5 -  > 1)&!#( •  0*, .,40*, 2,40*, /+' 1, $ 1,  1    

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> 1>815I'EDKBH  • 2>:)J% .>;0 DK6 1>: 815I245I-5A'E&99 #!  •235'E 34I'E =955I ?B +/ $

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Test case

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> ';H GI'(6:hh:mm:ss.fffxx.f')-8# )$! • hh00-99A7 > @C > +C;HJ)!  > +C45?F &) > 1C>4,()"GI0.0-80   > 2C<= )  > 2.ECGI0.0%)!'; >  15C5*C-3/D  &)9B

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> $.400"%4  > 57:@*,9 0*-=%4  > 2:@(57;:@1000m10200m).: 400m40"%4 > >:@(57;:@10200m ).: 350m40"%4 > 10km/h !<8657.?453940"%4 > -=%4. .?+'&%4A  -1 ( %4  • /).(AM0.AM6.)30%( • .?(AM6.AM9.30# or PM18.AM0.)50%( -=74

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!   1000m   10200m  920 10900m  80  400 : 1400

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> =+hh:mm:ss.fffmsec2:  > MS10 @/6;'BH (BC) > msec&-  =RA37!#7*4 "  5I > .F  > )$OK.F 'B> > LHMS.F 'B>DMS/QMS0( < P.F 'B> > %NLH*4'B>%NLH=R.F 'B>45 E %N JF'B?N5IT8

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> 4ALR "1*1!1#&#(O > HGMF NQ   •B7 ',% 6E5 >   ;J,  •&#("1) @:3 > 8HKF'1$P9 $/(  +. -0(

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> 27?D,: *E6<.; > 6< A'B0A+3>   > ,C=/(  %"1 > 8&-!# 2745)$ %!  279@*E< 

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Thank you!