Problem:
Score : 100 points

Problem Statement

Given is a string S representing the day of the week today.

S is SUN, MON, TUE, WED, THU, FRI, or SAT, for Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, and Saturday, respectively.

After how many days is the next Sunday (tomorrow or later)?

Constraints

S is SUN, MON, TUE, WED, THU, FRI, or SAT.

Input

Input is given from Standard Input in the following format:

S

Output

Print the number of days before the next Sunday.

Sample Input 1

SAT

Sample Output 1

1

It is Saturday today, and tomorrow will be Sunday.

Sample Input 2

SUN

Sample Output 2

7

It is Sunday today, and seven days later, it will be Sunday again.

Solution in C (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>

int main()
{
  char s[4];
  scanf("%s",&s);
  if(strcmp(s,"MON")==0)
       printf("6");
  
  else if(strcmp(s,"TUE")==0)
       printf("5");
  
   else if(strcmp(s,"WED")==0)
       printf("4");
  
   else if(strcmp(s,"THU")==0)
       printf("3");
  
    else if(strcmp(s,"FRI")==0)
       printf("2");
  
    else if(strcmp(s,"SAT")==0)
       printf("1");
  
    else 
       printf("7");
}