import java.util.Scanner;

public class Main {

	private final static String[] S = new String[]{
			"SUN","MON","TUE","WED","THU","FRI","SAT"
			};

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		sc.close();
		for(int i = 0;i < S.length;i++){
			if(s.equals(S[i])){
				System.out.println(7-i);
				break;
			}
		}
	}

}
/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