Exercise and Rest

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Chef is on a new exercise plan: he'll work out for two days, then take one rest day, and then repeat. Today is Chef's $N$-th rest day. How many days (including today) has it been since Chef started his plan? ### Input - The only line of input contains a single integer $N$. ### Output Output a single integer: the number of days that have passed since Chef started his exercise plan. ### Constrai

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solution.cppC++17

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