import java.util.Scanner;
import java.util.Arrays;

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

        String str = sc.nextLine();

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