import java.util.Scanner;

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

        if (A.equals("SUN")) {
            System.out.print(7);
        } else if (A.equals("MON")) {
            System.out.print(6);
        } else if (A.equals("TUE")) {
            System.out.print(5);
        } else if (A.equals("WED")) {
            System.out.print(4);
        } else if (A.equals("THU")) {
            System.out.print(3);
        } else if (A.equals("FRI")) {
            System.out.print(2);
        } else {
            System.out.print(1);
        }
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz