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: Accepted)

'use strict';
const main = input => {
  const s = input[0];
  switch (s) {
    case 'SUN':
      console.log(7);
      break;
    case 'MON':
      console.log(6);
      break;
    case 'TUE':
      console.log(5);
      break;
    case 'WED':
      console.log(4);
      break;
    case 'THU':
      console.log(3);
      break;
    case 'FRI':
      console.log(2);
      break;
    case 'SAT':
      console.log(1);
      break;
    default:
      break;
  }
}
main(require("fs").readFileSync("/dev/stdin", "utf8").split('\n'));