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Problem with time !!!
By uamer, history, 4 years ago, In English

why my this code 118446438 get Time limit exceeded and this code 118446206 get accepted in problem 1535C - Unstable String

any hint

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4 years ago, # |
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for(int i=0 ; i<strlen(s) ; i++)

strlen(s) has $$$O(n)$$$ complexity so this whole loop has $$$O(n^2)$$$ complexity.

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4 years ago, # |
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strlen() is O(n)

the way strlen works is that it will scan and count, until it finds a null character: every time you call strlen, it scans again and again from the beginning, so it's inefficient, while s.size() is constant

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