import java.util.Scanner;
public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        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);
        }
        sc.close();
    }
}
/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