B'On the planet Mars a year lasts exactly n days (there are no leap years on Mars). But Martians have the same weeks as earthlings -- 5 work days and then 2 days off. Your task is to determine the minimum possible and the maximum possible number of days off per year on Mars. The first line of the input contains a positive integer n (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n xe2 x80 x89 xe2 x89 xa4 xe2 x80 x891 xe2 x80 x89000 xe2 x80 x89000) -- the number of days in a year on Mars. Print two integers -- the minimum possible and the maximum possible number of days off per year on Mars. In the first sample there are 14 days in a year on Mars, and therefore independently of the day a year starts with there will be exactly 4 days off . In the second sample there are only 2 days in a year on Mars, and they can both be either work days or days off. '...