#include<stdio.h>
#include<string.h>
#include<ctype.h>
int main()
{
    char day[50];
    scanf("%[^\n]",day);
    if(!isalnum || isdigit)
    {
    printf("Invalid input\n");
    }
    if(strcmp(day,"Today is Monday")==0)
    {
        printf("6\n");
    }
    else if(strcmp(day,"Today is Tuesday")==0)
    {
        printf("5\n");
    }
     else if(strcmp(day,"Today is Wednesday")==0)
     {
         printf("4\n");
     }
      else if(strcmp(day,"Today is Thursday")==0)
      {
          printf("3\n");
      }
      else if(strcmp(day,"Today is Friday")==0)
      {
          printf("2\n");
      }
       else if(strcmp(day,"Today is Saturday")==0)
       {
           printf("1\n");
       }
       else (strcmp(day,"Today is Sunday")==0)
       {
           printf("0\n");
       }
       else
       {
           printf("Invalid input\n");
       }
       return 0;
}