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fromcollectionsimportCounterdefisValid(s):# Write your code heresc=Counter(s)sc=sorted(sc.values())print(sc)iflen(set(sc))==1:return("YES")elifsc[0]==1andlen(set(sc[1:]))==1:return("YES")sc[-1]-=1iflen(set(sc))==1:return("YES")else:return("NO")
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Sherlock and the Valid String
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