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 9.2.1) (judge verdict: Wrong Answer)

#include <stdio.h>

int main(void){

  char S[3];
  
  scanf("%c",S[3]); 
  
  if(S[3] == "SUN") printf("7");
  if(S[3] == "MON") printf("6");
  if(S[3] == "TUE") printf("5");
  if(S[3] == "WED") printf("4");
  if(S[3] == "THU") printf("3");
  if(S[3] == "FRI") printf("2");
  if(S[3] == "SAT") printf("1");
  
  return 0;
}