GETTING WA in ABCstrings

http://www.codechef.com/viewsolution/3645055
this code gives me wrong answer… kindly help :slight_smile:

@akki16 : For the string “ABCABC” your output is 4 , the correct answer is 5 .

Valid substrings are : ABC , BCA , CAB , ABC , ABCABC

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Here is a test case where your code fail … “ABCC”