import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class Main {

	private static final Map<String, Integer> map = new HashMap<>();
	static {
		map.put("SAT", 1);
		map.put("FRI", 2);
		map.put("THU", 3);
		map.put("WED", 4);
		map.put("TUE", 5);
		map.put("MON", 6);
		map.put("SUN", 7);
	}

	public static void main(String[] args) {
		try (Scanner scanner = new Scanner(System.in)) {
			System.out.println(map.get(scanner.next()));
		}
	}
}

/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