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 JavaScript (Node.js 12.16.1) (judge verdict: Accepted)

"use strict";
function main(input) {
    const S = ["SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"]
    console.log(7 - S.indexOf(input.replace("\n", "")));
    return;
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));