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