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 Perl (v5.18.2) (judge verdict: Accepted)

$a{"SUN"} = 7;
$a{"MON"} = 6;
$a{"TUE"} = 5;
$a{"WED"} = 4;
$a{"THU"} = 3;
$a{"FRI"} = 2;
$a{"SAT"} = 1;
chomp($s = <>);
print "$a{$s}\n";