import java.util.Scanner;
public class Main{
    public static void main(String args[]){
       Scanner scan = new Scanner(System.in);
       String[] X = {"SUN","MON","TUE","WED","THU","FRI","SAT"};
       int i;
       String Y = scan.nextLine();
       for(i=0;i<7;i++) if(Y.equals(X[i]))break;
       System.out.printf("%d",7-i);
    }
}
/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