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){
  input = input.split("\n");
  tmp = input[0].split(" ");
  var S = (tmp[0]);
  var answer = 0;
  if(S === 'SUN'){
    answer = 7;
  }else if(S === 'MON'){
    answer = 6;
  }else if(S === 'TUE'){
    answer = 5;
  }else if(S === 'WED'){
    answer = 4;
  }else if(S === 'THU'){
    answer = 3;
  }else if(S === 'FRI'){
    answer = 2;
  }else if(S === 'SAT'){
    answer = 1;
  }
  console.log(answer);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));