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Jul 19th, 2018
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  1. def isIn(char, aStr):
  2. #print((aStr))
  3. m=(len(aStr)-1)//2
  4. #print(m,"m")
  5. if(len(aStr)==1):
  6. if(char==aStr[m]):
  7. #print(aStr[0],char,"in bc")
  8. return True
  9. return False
  10. if(char==aStr[m]):
  11. #print(aStr[m],m,char,"in")
  12. return True
  13. elif(char<aStr[m]):
  14. if(m!=0):
  15. return isIn(char, aStr[:m])
  16. else:
  17. if(len(aStr)!=1):
  18. return isIn(char, aStr[m+1])
  19. elif(char>aStr[m]):
  20. #print("c2",aStr[m+1:len(aStr)])
  21. return isIn(char, aStr[m+1:])
  22.  
  23. c=input()
  24. s=input()
  25. print(bool(isIn(c,s)))
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