import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		int ans = 0;

		switch (s) {
		case "SUN":
			ans = 7;
			break;
		case "MON":
			ans = 6;
			break;
		case "TUE":
			ans = 5;
			break;
		case "WED":
			ans = 4;
			break;
		case "THU":
			ans = 3;
			break;
		case "FRI":
			ans = 2;
			break;
		case "SAT":
			ans = 1;
			break;
		default:
			ans = 0;
		}

		System.out.println(ans);
		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