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>

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

  scanf("%s",&day);
  if( (day[0]=='S')&&(day[1]=='U')) printf("7\n");
  if( day[0]=='M' ) printf("6\n");
  if( (day[0]=='T')&(day[1]=='U')) printf("5\n");
  if( day[0]=='W' ) printf("4\n");
  if( (day[0]=='T')&(day[1]=='H')) printf("3\n");
  if( day[0]=='F' ) printf("2\n");
  if( (day[0]=='S')&(day[1]=='A')) printf("1\n");

  return 0;
}