import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here! 
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        
        if (str.equals("SUN")) {
            System.out.println(7);
        } else if (str.equals("MON")) {
            System.out.println(6);
        } else if (str.equals("TUE")) {
            System.out.println(5);
        } else if (str.equals("WED")) {
            System.out.println(4);
        } else if (str.equals("THU")) {
            System.out.println(3);
        } else if (str.equals("FRI")) {
            System.out.println(2);
        } else {
            System.out.println(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