import java.util.Scanner;

class Main {
  
  public static void main(String[] args) {
    Scanner stdIn = new Scanner(System.in);
    
    String S = stdIn.next();
  byte 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; break;
    }
    
    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