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(){
  int n,ans;
  char c[10];
  scanf("%s",&c);
  if(c[0]=='S'&&c[1]=='U')ans=7;
  if(c[0]=='M')ans=6;
  if(c[0]=='T'&&c[1]=='U')ans=5;
  if(c[0]=='W')ans=4;
  if(c[0]=='T'&&c[1]=='H')ans=3;
  if(c[0]=='F')ans=2;
  if(c[0]=='S'&&c[1]=='A')ans=1;
  printf("%d",ans);
  return 0;
}