A mathematical trick

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Ms. A is good at mathematics and she wants to trick her little brother Mr. X who is not very good at mathematics. She gives him a number and asks her to tell her the minimum number of digits that needs to be changed so that the number is divisible by 13. Note : One can also change all digits to 0 as divisible by any number. Help Mr. X in completing the challenge. Input The first line inputs a

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solution.cppC++17

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