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 <string.h>

int main () {
  char day[4];
  int i;

  scanf("%s", day);

if(strcmp(day, "MON") == 0){
  printf("6\n");
  }
else if(strcmp(day, "TUE") == 0){
  printf("5\n");
}
else if(strcmp(day, "WED") == 0){
  printf("4\n");
}
else if(strcmp(day, "THU") == 0){
  printf("3\n");
}
else if(strcmp(day, "FRI") ==0){
  printf("2\n");
}
else if(strcmp(day, "SAT") ==0){
  printf("1\n");
}
else{
  printf("7\n");
}

  return 0;
}