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: Accepted)

<?php
$s = trim(fgets(STDIN));
if($s === "SUN") {
    $nextSun = 7;
} elseif($s === "MON") {
    $nextSun = 6;
} elseif($s === "TUE") {
    $nextSun = 5;
} elseif($s === "WED") {
    $nextSun = 4;
} elseif($s === "THU") {
    $nextSun = 3;
} elseif($s === "FRI") {
    $nextSun = 2;
} elseif($s === "SAT") {
    $nextSun = 1;
}
echo $nextSun . PHP_EOL;