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 Rust (1.42.0) (judge verdict: Accepted)


fn main() {
    let v1=vec!["SUN","MON","TUE","WED","THU","FRI","SAT"];
    let mut i=0;
    let s ={
        let mut s = String::new();
        std::io::stdin().read_line(&mut s).unwrap(); //1行読む。失敗を無視
        s.trim_right().to_owned()
    };
    for val in v1{
        if val == s
        {
            println!("{}",7-i);
        }
        i+=1;
    }
}