import java.util.Scanner;
class Main{
	public static void main(String[] args){
		Scanner scn = new Scanner(System.in);
		String[] s = {"SUN","MON","TUE","WED","THU","FRI","SAT"};
		String input = scn.next();
		int j=0;
		for(int i=0;i<=6;i++){
			if(input.equals(s[i])) j=7-i;
		}
		System.out.println(j);
	}
}
/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