Sereja and two strings

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Sereja has two strings s and w. Sereja can do 3 types of operations: - Remove any character from the first string, this operation takes a minutes of time - Add any character in any position of the first string, this operation takes a minutes of time - Replace some character form first string by some other character, this operation takes b minutes of time Sereja has k minutes to do some opera

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solution.cppC++17

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