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>
#include <stdlib.h>
#include <string.h>

int main(void) {
   
   char S[100];
   
   scanf("%s",S);
   
   if (strcmp(S,"SUN") == 0) {
      printf("7\n");
   }
   else if (strcmp(S,"MON") == 0) {
      printf("6\n");
   }
   else if (strcmp(S,"TUE") == 0) {
      printf("5\n");
   }
   else if (strcmp(S,"WED") == 0) {
      printf("4\n");
   }
   else if (strcmp(S,"THU") == 0) {
      printf("3\n");
   }
   else if (strcmp(S,"FRI") == 0) {
      printf("2\n");
   }
   else if (strcmp(S,"SAT") == 0) {
      printf("1\n");
   }
   
   return 0;
}