【广东大学生网络攻防大赛-WriteUp（非官方）】Web | easy_ctf

def mysort(s):
     dic={
    
    }
     for i in s:
          if i not in dic:
               dic[i]=1
          else:
               dic[i]+=1
     a=sorted(dic.items(),key=lambda x:x[1],reverse=False)
     print(a)
     m=""
     for i in a:
          m+=i[0]
     return m
s='''
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
'''
print(mysort(s))

这玩意我试了N遍才拿到flag，感觉这题有bug