import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String S = new String();
		S = sc.next();
		
		switch (S) {
		case "SUN" :
			System.out.print("7");
		    break;
		case "MON" :
			System.out.print("6");
			break;
		case "TUE" :
			System.out.print("5");
			break;
		case "WED" :
			System.out.print("4");
			break;
		case "THU" :
			System.out.print("3");
			break;
		case "FRI" :
			System.out.print("2");
			break;
		case "SAT" :
			System.out.print("1");
			break;
		}
	}
}
/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