Lao Wang sold apples in n days (n < = 5). For example, n is five days. On the first day, he sold half of all the apples plus half an apple; The next day, he sold one third of the remaining apples plus one third of an apple; On the third day, he sold 1/4 of the remaining apples plus 1/4 of an apple; On the fourth day, he sold 1/5 of the remaining apples and 1/5 of an apple, and on the last day, he sold the remaining 11 apples. Input n and output the number of apples at the beginning (you can't cut the apples when you sell them). 1. The intput is an integer which is no more than 5 2. The output is an integer. 3. We will test 5 kinds of data.

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