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