Holidays

# 题目描述 在火星上，一年正好是n天(火星上没有闰年)。但是火星人和地球人有同样的周数——5个工作日，然后是2天的假期。你的任务是确定火星上每年的最小休假天数和最大休假天数。 # 输入格式: 输入的第一行包含一个正整数n(1<=n<=1000000)，即火星上一年的天数。 # 输出格式: 输出两个整数——火星上每年可休假的最小天数和最大天数。 # 样例解释 样例1：火星上一年14天，因此假期刚好只能是4天（两周有4天休息）。 样例2：火星上一年2天，可以是工作日，也可以是休息日。

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<=n<=1000000 $ ) — 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.

14

4 4

2

0 2

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.