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

public class Main {
  public static void main(String[] args ){

    Scanner sc = new Scanner(System.in);

    List<String> week = new ArrayList<String>();
    week.add("SUN");
    week.add("MON");
    week.add("TUE");
    week.add("WED");
    week.add("THU");
    week.add("FRI");
    week.add("SAT");

    String S = sc.next();

    int remainNextSunday = week.indexOf(S);
    System.out.println(7 - remainNextSunday);
  }
}

/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