import java.util.*;
public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      	String s = sc.next();
      	
      	switch(s){
          case "SUN":
            System.out.println(7);
            break;
          case "MON":
            System.out.println(6);
            break;
          case "TUE":
            System.out.println(5);
            break;
          case "WED":
            System.out.println(4);
            break;
          case "THU":
            System.out.println(3);
            break;
          case "FRI":
            System.out.println(2);
            break;
          case "SAT":
            System.out.println(1);
            break;
        }
    }
}
/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