import java.io.*;
import java.util.*;

public class Main {

    public static void main(String[] args) throws Exception {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        String string = in.readLine();
        if (string.equals("SAT")) {
            System.out.println("1");
        }
        if (string.equals("SUN")) {
            System.out.println("7");
        }
        if (string.equals("MON")) {
            System.out.println("6");
        }
        if (string.equals("TUE")) {
            System.out.println("5");
        }
        if (string.equals("WED")) {
            System.out.println("4");
        }
        if (string.equals("THU")) {
            System.out.println("3");
        }
        if (string.equals("FRI")) {
            System.out.println("2");
        }
    }

}
/*


 */
/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