import java.util.*;

public class Main {
  static final String weeks = "SUNSATFRITHUWEDTUEMON";
  public static void main(String args[]){
    Scanner sc = new Scanner(System.in);
    String str = sc.next();
    int index = weeks.indexOf(str);
    if(index > 0){
      index = (index) / 3;
    }else {
      index = 7;
    }
    System.out.println(String.valueOf(index));
  }
}
/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