import java.util.*;
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 if(S.equals("SAT")) {
			System.out.println(1);
		}else {
			System.out.println(S);
		}
		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