import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String str = scan.nextLine();
        scan.close();
      
      if(str.equals("SAT")){
        System.out.println("1");
      }else if(str.equals("FRI")){
        System.out.println("2");
      }else if(str.equals("THU")){
        System.out.println("3");
      }else if(str.equals("WED")){
        System.out.println("4");
      }else if(str.equals("TUE")){
        System.out.println("5");
      }else if(str.equals("MON")){
        System.out.println("6");
      }else if(str.equals("SUN")){
        System.out.println("7");
    }
    }
}
/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