import java.util.Scanner;

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

    String s = input.nextLine();

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