import java.util.*;
import java.text.DecimalFormat;

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

		if (S.equals("SUN"))
			System.out.println(7);
		else if (S.equals("MON"))
			System.out.println(6);
		else if (S.equals("TUE"))
			System.out.println(5);
		else if (S.equals("WED"))
			System.out.println(4);
		else if (S.equals("THU"))
			System.out.println(3);
		else if (S.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