import java.io.*;

class Main
{
  public static void main(String[] args)throws IOException
  {
    BufferedReader br =
     new BufferedReader(new InputStreamReader(System.in));

    String S = br.readLine();

    switch(S){
       case "SUN":
          System.out.println(7);
          break;
       case"MON":
          System.out.println(6);
          break;
       case"TUE":
          System.out.println(5);
          break;
       case"WED":
          System.out.println(4);
          break;
       case"THU":
          System.out.println(3);
          break;
       case"FRI":
          System.out.println(2);
          break;
       case"SAT":
          System.out.println(1);
          break;
    }
  }
}
/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