Arya and her Challenges

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Arya Stark is well-known for her cleverness and skills. She has participated in many challenges in the past — so many that she does not even remember them all! One of her challenges lasted for $N$ days. The first day of this challenge was $S$th day of the week and the last day was $E$th day of the week. Arya remembers the duration of this challenge vaguely. She says that the duration c

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solution.cppC++17

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