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)

function Main(input) {
  var S = input[0];
  var n;

  if (S == "SUN") {
    n = 7;
  }
  if (S == "MON") {
    n = 6;
  }
  if (S == "TUE") {
    n = 5;
  }
  if (S == "WED") {
    n = 4;
  }
  if (S == "THU") {
    n = 3;
  }
  if (S == "FRI") {
    n = 2;
  }
  if (S == "SAT") {
    n = 1;
  }
  console.log("%s", n);
}

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