import java.util.Scanner;

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

		String[] arr = {"SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"};
		
		String input = sc.next();
		
		int tmp = 0;
		for(String i: arr) {
			if(input.equals(i)) {
				System.out.println(7-tmp);
				return;
			}
			
			tmp++;
		}
	}
}
/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