Currency trouble

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The mayor of Bilaspur Mr. Lionheart has a plan for the residents of Bilaspur. He wants to introduce two types of currency notes A and B. But there is a problem as it might not be possible to make change for every possible sum of money by using these notes only. In those cases the citizens will have to opt for digital payment. The mayor plans this exrcise as an attempt to familiarize the citize

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