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(void)
{
  char s[3];
  scanf("%s", &s);
  
  switch(s[0]){
    case 'S':
      switch(s[1]){
        case 'U':
      	printf("7");
      	break;
        case 'A':
        printf("1");
        break;
      }
      break;
    case   'M':
      printf("6");
      break;
    case   'T':
      switch(s[1]){
        case 'U':
	    printf("5");
      	break;
        case 'H':
        printf("3");
        break;
      }
      break;
    case   'W':
      printf("4");
      break;
    case   'F':
      printf("2");
      break;
  }
  return 0;
}