Twin Brothers and Coupons

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There are 6 twin brothers A1 A2. B1 B2. C1 C2. D1 D2. E1 E2. F1 F2 and there is one common friend G who does not have a twin brother. A1 and A2 are twins, B1 and B2 are twins and so on. So, there are altogether 13 people going for the festival. They all go to the college fest Saturnalia, and as you all know there are stalls and you need to buy coupons for games at the stall. Now they want to p

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solution.cppC++17

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