import java.util.*;
 
class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        int ans = 0;
 
        switch (s) {
            case "SUN":
                ans = 7;
                break;
            case "MON":
                ans = 6;
                break;
            case "TUE":
                ans = 5;
                break;
            case "WED":
                ans = 4;
                break;
            case "THU":
                ans = 3;
                break;
            case "FRI":
                ans = 2;
                break;
            case "SAT":
                ans = 1;
        }
        System.out.println(ans);
    }
}
/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