import java.util.ArrayList;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String today = sc.next();
        ArrayList l = new ArrayList(7);
        l.add("SAT");
        l.add("FRI");
        l.add("THU");
        l.add("WED");
        l.add("TUE");
        l.add("MON");
        l.add("SUN");
        System.out.println(l.indexOf(today)+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