import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String today = sc.next();
        
        String[] weekdays = {"SUN","MON","TUE","WED","THU","FRI","SAT"};
        List<String> weekdayList = Arrays.asList(weekdays);
        int i = weekdayList.indexOf(today);

        System.out.println(7 - i);
    }
}

/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