P16828 [AtCoder] Given is a string S representing the day of the week today.
普及-
题目描述

Given is a string S representing the day of the week today.
S is SUN, MON, TUE, WED, THU, FRI, or SAT, for Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, and Saturday, respectively.
After how many days is the next Sunday (tomorrow or later)?

-----Constraints-----
- S is SUN, MON, TUE, WED, THU, FRI, or SAT.

-----Input-----
Input is given from Standard Input in the following format:
S

-----Output-----
Print the number of days before the next Sunday.

-----Sample Input-----
SAT

-----Sample Output-----
1

It is Saturday today, and tomorrow will be Sunday.

输入格式

见题面

输出格式

见题面

样例输入
SAT
样例输出
1