Birthday Gift

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Isaac has to buy a new HackerPhone for his girlfriend Amy. He is exploring the shops in the town to compare the prices whereupon he finds a shop located on the first floor of a building, that has a unique pricing policy. There are N steps leading to the shop. A numbered ball is placed on each of the steps. The shopkeeper gives Isaac a fair coin and asks him to toss the coin before climbing each s

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solution.cppC++17

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