
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		String line = sc.nextLine();
		String num = "0";
		if (line.equals("SUN")) {
			num = "7";
		} else if (line.equals("MON")) {
			num = "6";
		} else if (line.equals("TUE")) {
			num = "5";
		} else if (line.equals("WED")) {
			num = "4";
		} else if (line.equals("THU")) {
			num = "3";
		} else if (line.equals("FRI")) {
			num = "2";
		} else {
			num = "1";
		}

		// 出力
		System.out.println(num);
	}
}
/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