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# Lets define the multiplication operation on three letters A,B,C as follows: ABC A BBAB CBA C ACC

So, for example AB = B (row A and column B) and we have (AB)C = A. Give an efficient algorithm that gets a string of letters A,B and C and say whether or not it is possible to paranthesize the string in such a way that the value of the resulting expression become A.

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Computer Science, Engineering & Technology

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