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 v5.12) (judge verdict: Wrong Answer)

function Main(input) {
    youbi = ["SUN","MON","TUE","WED","THU","FRI","SAT"]

    //input = input.split("\n")
    //input = input.map(e=>e.split(" "))
    //input = input.map(e=>e.map(f=>parseInt(f,10)))    
        
    const index = youbi.findIndex(e=>{
        return e==input
    })


    console.log(7-index);
}

Main(require("fs").readFileSync("/dev/stdin", "utf8"));