Codeforces celebrates 10 years! We are pleased to announce the crowdfunding-campaign. Congratulate us by the link https://codeforces.com/10years. ×

 
 
 
 
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A_Fan_of_the_AK_King--lk

大大佬佬佬恺恺 口AA口 口KK口 听大、恺! 大佬佬恺恺佬大, China