Problem 7

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You have an unbiased coin which you want to keep tossing until you get N consecutive heads. You've tossed the coin M times and surprisingly, all tosses resulted in heads. What is the expected number of additional tosses needed until you get N consecutive heads? Input: The first line contains the number of cases T. Each of the next T lines contains two numbers N and M. Output: Output T lines cont

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solution.cppC++17

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