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

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


			String[] days = new String[]{"SUN", "MON" , "TUE", "WED", "THU", "FRI", "SAT"};
			
			String s = sc.next();
			
			List<String> daysList = Arrays.asList(days);
			
			int index = daysList.lastIndexOf(s);
			
			System.out.println(7-index);
		}
	}
}
/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