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 PHP7 (7.0.15) (judge verdict: Wrong Answer)

<?php
$input = fgets(STDIN);
$S = array();

$S['SUN'] = 1;
$S['MON'] = 2;
$S['TUE'] = 3;
$S['WED'] = 4;
$S['THU'] = 5;
$S['FRI'] = 6;
$S['SAT'] = 7;

echo ((7 -$S[$input]) +1).PHP_EOL;