import java.io.*;
import java.util.*;

class Main {

    // Generated by 1.1.6 https://github.com/kyuridenamida/atcoder-tools  (tips: You use the default template now. You can remove this line by using your custom template)
    public static void main(String[] args) throws Exception {
        final Scanner sc = new Scanner(System.in);
        String S;
        S = sc.next();
        solve(S);
    }

    static void solve(String S){
        System.out.println(calc(S));
    }

    static int calc(String S) {
        switch (S) {
            case "SUN": return 7;
            case "MON": return 6;
            case "TUE": return 5;
            case "WED": return 4;
            case "THU": return 3;
            case "FRI": return 2;
            case "SAT": return 1;
        }
        return 0;
    }
}

/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