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

public class Main {

    public static void main(final String[] args) throws Exception {
        final Scanner sc = new Scanner(System.in);
        String S;
        S = sc.next();

        final Solver solver = new Solver();
        solver.solve(S);
    }
}

class Solver {
    final String[] days = {"SUN","MON","TUE","WED","THU","FRI","SAT"};
    public void solve(String S) {
        for (int i = 0; i < 7; i++) {
            if (days[i].equals(S)) {
                System.out.println(7 - i);
                return;
            }
        }
    }
}


/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