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;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        switch(sc.nextInt() % 7) {
        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;
        case 4:
            System.out.println("mon");
            break;
        case 5:
            System.out.println("tue");
            break;
        case 6:
            System.out.println("wed");
            break;
        }
    }
}