import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		String day = sc.nextLine();

		switch(day) {
		case "MON":
			System.out.println(6);
			break;
		case "TUE":
			System.out.println(5);
			break;
		case "WED":
			System.out.println(4);
			break;
		case "THU":
			System.out.println(3);
			break;
		case "FRI":
			System.out.println(2);
			break;
		case "SAT":
			System.out.println(1);
			break;
		case "SUN":
			System.out.println(7);
			break;
		}
		
		sc.close();

	}

}

/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