import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      String S = sc.next();
      String Q[] = {"SUN","MON","TUE","WED","THU","FRI","SAT"};
      int P = Arrays.asList(Q).indexOf(S); //Arrays.aslist → 配列をリスト化
      System.out.println(7-P);
    }
}      
/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