Problem:
Score : 100 points

Problem Statement

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 1

SAT

Sample Output 1

1

It is Saturday today, and tomorrow will be Sunday.

Sample Input 2

SUN

Sample Output 2

7

It is Sunday today, and seven days later, it will be Sunday again.

Solution in Lua (5.3.2) (judge verdict: Accepted)

local a=io.read()
if a == "SUN" then
  print(7)
elseif a == "MON" then
  print(6)
elseif a == "TUE" then
  print(5)
elseif a == "WED" then
  print(4)
elseif a == "THU" then
  print(3)
elseif a == "FRI" then
  print(2)
else
  print(1)
end