import java.util.Scanner;

public class Main {
	public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);
		String str = scan.nextLine();
		int num = 0;
		scan.close();
		
		if(str.equals("SUN")) {num = 7;}
		else if (str.equals("MON")) {num = 6;}
		else if (str.equals("TUE")) {num = 5;}
		else if (str.equals("WED")) {num = 4;}
		else if (str.equals("THU")) {num = 3;}
		else if (str.equals("FRI")) {num = 2;}
		else if (str.equals("SAT")) {num = 1;}
		
		System.out.println(num);
	}
}



/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