Converting substring into integer for the operation

#1


Can you help me with the error? Thanks !!

#2

Hey @Mayank2096,
I think you misunderstood the question.

You can use the following approach:
Check for all sub-strings of the given string of digits, starting from the all strings of length 1 and then gradually checking for the strings of increasing size:

Check if the sub-string is CB number: for this, create a function. If sub-string is 1 or 0 return false. If sub-string is any of the {2,3,5,7,11,13,17,19,23,29}, then return true. If sub-string is divisible by any of the {2,3,5,7,11,13,17,19,23,29}, then return false. Else return false

Now if it is a substring: call a function that marks the index as visited for indexes which are part of that CB number. Increment the count for CB number.
Print the count

#3

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