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
$n = strval(fgets(STDIN));


switch ($n) {
    case "MON":
        echo 6;
        break;
    case "TUE":
        echo 5;
        break;
    case "WED":
        echo 4;
        break;
    case "THU":
        echo 3;
        break;
    case "FRI":
        echo 2;
        break;
    case "SAT":
        echo 1;
        break;
    case "SUN" :
    	echo 7;
    
}
?>