چند روز پیش مسابقه TJCTF 2016برگزار شد.
مسابقه دبیرستانی بود و سوالاش از سطح پایین شروع میشد که برای ما تازه‌کارا مناسب بود. :)
راه‌حل چندتاشونو که حل کردم تو وبلاگ قرار میدم.
Basic Images - Forensics - 65 pt
Description :
Check out my shades! If you want the flag, I guess you should be basic like me. Good luck!
یه سوال الگوریتم 200 امتیازی هم حل کردم :)
یه استرینگ بزرگ داده شده و باید از اون تعداد استرینگ‌هایی که از a تشکیل شدند و طولشون هم بزرگتر مساوی 2 باشه رو پیدا کنیم.
caanqaaeamdwaagarapabseaawaabawaoaalaaaaaxxaapsxeaagragaaadawaoaanaawpqatdaaatakwsaaaayaaaaealabjxaaaeaaauamjawnsaataaaoaaqaxaaaaaeaajrahaaaaaadjaaqtewhspaaaaannaoaaaaaboaaaaaaaaaataqadihaaaaqawwaaazoaxaoapabuzwaaaaaaaahlaauakaaiyjavwcaasxaaturabanuataoikpkaoalaaaaaaafgaalwuxzaazaaltazjdaaasalraabaqjmaaadaaaaaaaaiauaqbajaaactaarwrcavmaaxxaqrxaaaaaaaeaaaqaajafaaadaciaaaakadraacafaahlaiaaaakefahalaaparxaaagaacnoraaytaloasaadaaaafataaoqarcazjmqeafajgaaaaaaavvaaaaaiaaaaiaaczrbalomaakgilacaayaayaxwaotaarlaxpaaraapaaaswhxxaajeagfaaaaeaaalaaaaeeaatoamayaaauaadaueccvaauvaakowasxaaatgnwaawtrxtudppfaaqfypaaaaanraiaaaynagqqaabdaayaaazaesasaaaaaaoaaaaacvawcasaiaaaavxafaqeaaadaciaaanujgxamxiaadazanaamaygabwrfazalaaawkpaalsaafiiataatavvaqaqzdatyaaaaanpsaaaajvaydxacyadaolabhocaaawaniniuaaakaaiaaanxaaxaccfaarlaakaabenevaaacaydaaxaaxepasmaasadabanaaafaalaladaagafaaaaaahagnixwemathayfagaxapkaaaafaasaacawaaaaackawamaaaawaatnaaoaaatbaniafawaalkaaumqzaoaauaamazaztamvdaxdaraeasaaaaachoavaaaqaajwaaaaaacarlaxaaapaaaaamfaaoeaoaaamapkacamraalbnavaaaxiaqazaamcmanagaicraawaaascbmraaavabaawaagqataazuaaaaakawxwazparaaaaaaaaasaiedhfaaaetaaaapaaapiaaaawembhmafalgayaaodamqazqwaasdeaappaacaarahnalaeaaaaanasasbzaaaaoaraeaazhaaevoiaazpypuggeayaapanzakaaaavzaacaaraaaaaaaxsvyacoxvttzgtbcuazxkuaaaiflbjzaaojaboxmaadkaaakzsbxaaaajanaatgaaaazarfaawujasaanxazowlfaayahaaaaaabdoayufltoaiabayaaafawiazaqaasaafchifgpjuvauaaayaaatvaxaaeaaharrazavlayaaaaaaagxcfaemvyaaaaaaulxajahazgapaasagswmahaapbaaafnaaywpagqiauaaaavbmgifaweatvaayhaadajaaaaragaminaafixwuaaexaajawzaazlaxastaatmdaaaaairfnraaaaaaaxaafgaattgakkaacioaabatahfqabmvzfzafifsbbnaaouaahalaahuaawaagataamarjgaaaamianabhaaaaaaiahtpxvaaaaaaahaahtgaaaazvafaaaavzkamalawaaqeaaaavgjkanenairaalazaaaayafsazaacodeawvamtdyaaaynaaxaazvssadaqdvstaaolcsecwszzaajahawajooaahgumavaabriwaazgrtaauaxpaaawbhaberaqltaaaaqaaaaxayldaaxgakmwmaaxxayualfaaijsaaaazxpaaaewcngnaaaypvmayaiaamaasaaakattsadqclclafadaaaadsnwdnaaqasataabasaataaaapajqatuakaygaaoamatgaacaaaaaljwzaaaqajafanaaxaagxqaaibgaslawuadeaaxbaweaxxaaaaesnaacatahaitatqsabkaaaaatlajpavaaadlnvzaeaascaaaahqmatanapciszqefcalacjraamhaaaaoanaganaaaaacaqcnaayaawaagazaayyaayjagasarbuafzpmpqeaohaaaglidaanrheaaaabnnaairalrbjuzaakaabgaeaadaaetaauaaaaazaadzxaaaagavazehulaauazvcaajcaaaaqgexaaaaajcirxauaahaoaaahohaanaayoaalukbaauaaaaioaaakcobkoaqdvalasraaawuaakaaaaaadamsaaaaaqakaanaxaaaiwaodazaanaaaravbqimznaataaesaavyqjakgabaeaiasamapaaaalwzaikpbclaaaacalakusaapaaaaqnaanaaahoaaaecaarwwaaaabxaaaaaepalaaaaaaaxaxgamawmalaaaaanqeaaaaxaomajaaaiavaaqxwaazaaaaaaaaapqpaaaaaastgdydwxaalahaiziaamauayaqaxyryaizkaefuaaaaaaaeaaanaaiaaaaayaaaaaaiywaaahaaaaajtawmanmadayaaawaaaaxagaaicaiagaaanaaakaodapaaaaabaaaaaadauevaaywbaaaaaaaaaaygaaawaazimwasraazoagvzpaabrnmlhqghhoaaanbaaanaaaaaqxauaaataaaabaahaaaafzaawaapaaaaaarazalqhobgzacazasauaaaaaujafowabywlaagaaadaaatamaaagnpmaeaaaaahmmxapanaraagsxoutbaaaauaqamlazaaaaaaaazaalnsacxltaavaaxpldaqqhapasmalaasutapuasaaatuloaaadaizmaaaaaqqyalyopwakaayhvyaaaczjeauavauxypyenmaaqiaaqiaahuaaakaaujaدر ادامه پست قبلی، سوال بعدی :
Algo 100 - Appended Fibonacci Sum
این سوال الگوریتم هست، صورت سوال رو توی صفحه خودش ببینید.
در ادامه پست قبلی :
سوال بعدیش :
خب این سوال از اونجایی که توضیحات کمتری داده بود جالبتر بود.
این سوال هم مثل سوال قبلی رمز هست و یه سری عدد داده شده و پرچم رو میخواد :
22 12 200 12 1000 212 12 1000 210 201 12 1000 202 12 200 112 1 200 221 1000 202 120 1000 21 12 202 1000 202 22 12 1000 20 110 1 21 1000 202 22 200 12 12 1001 11 100 21 100 202 201 1001 100 201 112 202 1001 211 12 200 221 1001 201 12 10 210 200 12
(23, 5, 12, 12, 27, 20, 8, 5, 27, 6, 12, 1, 7, 27, 9, 19, 27, 8, 9, 4, 4, 5, 14, 27, 8, 5, 18, 5, 27, 2, 21, 20, 27, 6, 9, 18, 19, 20, 27, 23, 5, 27, 8, 1, 22, 5, 27, 19, 15, 13, 5, 27, 20, 5, 24, 20, 27, 20, 15, 27, 3, 15, 14, 6, 21, 19, 5, 27, 25, 15, 21, 27, 14, 15, 23, 27, 20, 8, 5, 27, 6, 12, 1, 7, 27, 9, 19, 27, 9, 14, 27, 6, 1, 3, 20, 27, 19, 5, 3, 18, 5, 20, 19, 28, 1, 18, 5, 28, 8, 9, 4, 4, 5, 14, 28, 9, 14, 28, 20, 8, 9, 19, 28, 12, 9, 19, 20, 27, 4, 15, 14, 20, 27, 9, 14, 3, 12, 21, 4, 5, 27, 20, 8, 5, 27, 16, 1, 18, 20, 19, 27, 20, 8, 1, 20, 27, 1, 18, 5, 27, 19, 5, 16, 5, 18, 1, 20, 5, 4, 27, 23, 9, 20, 8, 27, 19, 16, 1, 3, 5, 19)