Problem:
Day of Week

The 9th day of September 2017 is Saturday. Then, what day of the week is the X-th of September 2017?

Given a day in September 2017, write a program to report what day of the week it is.

Input

The input is given in the following format.

X

The input line specifies a day X (1 ≤ X ≤ 30) in September 2017.

Output

Output what day of the week it is in a line. Use the following conventions in your output: "mon" for Monday, "tue" for Tuesday, "wed" for Wednesday, "thu" for Thursday, "fri" for Friday, "sat" for Saturday, and "sun" for Sunday.

Sample Input 1

1

Sample Output 1

fri

Sample Input 2

9

Sample Output 2

sat

Sample Input 3

30

Sample Output 3

sat

Solution in JAVA (judge verdict: Accepted)

import java.util.Scanner;

class Main {

    public static void main(String[] args) {
        Scanner scan=new Scanner(System.in);
        int X =scan.nextInt();
        switch(X%7){
            case 4:
                System.out.println("mon");
                break;
            case 5:
                System.out.println("tue");
                break;
            case 6:
                System.out.println("wed");
                break;
            case 0:
                System.out.println("thu");
                break;
            case 1:
                System.out.println("fri");
                break;
            case 2:
                System.out.println("sat");
                break;
            case 3:
                System.out.println("sun");
                break;    
        }
        
    }

}