htb updates and ductf update

DownUnderCTF 2023/beginner/Welcome to DUCTF!/README.md

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+Aufgabe:
+
+```
+To compile our code down here, we have to write it in the traditional Australian Syntax: ( Try reading bottom up! )
+
+¡ƃɐlɟ ǝɥʇ ʇno noʎ ʇuᴉɹd ll,ʇᴉ puɐ ɹǝʇǝɹdɹǝʇuᴉ ǝɥʇ ɥƃnoɹɥʇ ʇᴉ unɹ puɐ ǝɹǝɥ ǝpoɔ sᴉɥʇ ǝʞɐʇ ʇsnJ .ƎWWIפ uɐɔ noʎ NOʞƆƎɹ I puɐ ┴∩Oq∀ʞ˥∀M ƃuᴉoפ '¡H∀N H∀Ǝ⅄ 'ɐʞʞɐ⅄ pɹɐH 'ǝʞᴉl sǝɹnʇɐǝɟ ɔᴉʇsɐʇuɐɟ ƃuᴉɹnʇɐǝℲ
+
+.snlԀ snlԀ ǝᴉssn∀ ǝʌᴉsnlɔuᴉ ʎʇᴉuɐɟoɹd ǝɹoɯ 'ɹǝʇsɐɟ 'ɹǝʇʇǝq ǝɥʇ oʇ noʎ ǝɔnpoɹʇuᴉ I uɐɔ ʇnq ++Ɔ ɟo pɹɐǝɥ ǝʌ,no⅄
+
+Author: pix
+file: welcome_to_ductf.aplusplus
+```
+

DownUnderCTF 2023/beginner/Welcome to DUCTF!/welcome_to_ductf.aplusplus

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+¡***Ɔ SɹƎƎHƆ
+
+;„¡Ⅎ┴Ɔ ǝɥʇ ɟo ʇsǝɹ ǝɥʇ ʎoɾuƎ„ ƎWWIפ
+
+;()Ⅎ┴Ɔ_ƎH┴
+
+<
+;H┴MƎɹ┴S + ɹnoHʎddɐH + Ⅎ∀˥פ ƎWWIפ	
+;„ɔoɹɔ ɐ ɹɐǝu ʇᴉ ʇɟǝl oƃuoɹp ʎpoolq ʇɥƃᴉɹ ǝɯos 'ʇᴉ punoɟ I 'ǝʇɐɯ llǝɥ ʎpoolq„ ƎWWIפ  
+<	
+;SIH┴ ʞƆ∩Ⅎ Ǝ┴∀W ¿ 0 == (9 '0)ǝɔᴉDǝɯoSʞɔnɥƆ NOʞƆƎɹ ∀⅄		
+
+;(000Ɩ)ʞɔɐSǝɥ┴ʇᴉH		
+		
+;„...ƃɐlɟ ɐʎ sᴉ ɥɐlɐƃ ,uᴉɯɐlɟ ǝɥʇ ǝɹǝɥM„ ƎWWIפ    	
+> (¡H∀N 'H∀Ǝ⅄) ˥I┴N∩ ┴∩Oq∀ʞ˥∀M ∀ ƎΛ∀H ˥˥,I NOʞƆƎɹ I	
+;„ƎɹƐɥʍƐɯoϛ_ʞɔ0lƆoϛ-sʇƖ„ = ɹnoHʎddɐH NOʞƆƎɹ I    
+;„¡ǝʇɐɯ ɐʎ ɹoɟ ƃɐlɟ ǝɥʇ u,ɥɔʇǝℲ„ ƎWWIפ	
+> () SI Ⅎ┴Ɔ_ƎH┴ ɹOℲ ∀ʞʞ∀⅄ Dɹ∀H ƎH┴
+;„{Ⅎ┴Ɔ∩D„ = Ⅎ∀˥פ NOʞƆƎɹ I
+
+  
+<
+;(000ϛ)ʞɔɐSǝɥ┴ʇᴉH  
+  
+<  
+;פ∀˥Ⅎ_∀⅄ ƎWWIפ    
+> ¿ Ɩ == Qqq_ƎW NOʞƆƎɹ ∀⅄  
+
+;„}¡ǝʇɐWǝɹǝHʇ,uᴉ∀ƃɐlℲɐ⅄{∩DℲ┴Ɔ„ = פ∀˥Ⅎ_∀⅄ NOʞƆƎɹ I  
+;Ɩ = Qqq_ƎW NOʞƆƎɹ I  
+  
+;(000ϛ)ʞɔɐSǝɥ┴ʇᴉH  
+;„פ∀˥Ⅎ ƎH┴ ┴NIɹԀ S┴Ǝ˥ '¡Ǝ┴∀W H∀Ǝ⅄„ ƎWWIפ  
+> () SI פ∀˥Ⅎ_┴NIɹԀ ɹOℲ ∀ʞʞ∀⅄ Dɹ∀H ƎH┴
+
+;ǝɔᴉDǝɯoSʞɔnɥƆ ƆN∩Ⅎ ƎW ┴HOԀWI
+;„}„ = H┴MƎɹ┴S NOʞƆƎɹ I
+;ʞɔɐSǝɥ┴ʇᴉH ƆN∩Ⅎ ƎW ┴HOԀWI
+
+¡Ǝ┴∀W ⅄∀D,פ