import java.util.Scanner;

/**
 * Can't Wait for Holiday
 */
public class Main {

    public static void main(String[] args) throws Exception {
        try (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;
            }

            System.out.println(ans);
        }
    }

}

/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