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: Wrong Answer)

#include<stdio.h>
 
int main(){
	int a;
  	char s[5];
  	(void)scanf("%s", s);
    if(s=="SUN"){
    a=7;
    } else if(s=="MON"){
    a=6;  
    } else if(s=="TUE"){
    a=5;
    } else if(s=="WED"){
    a=4;
    } else if(s=="THU"){
    a=3;
    } else if(s=="FRI"){
    a=2;
    } else if(s=="SAT"){
    a=1;
    } 
      
  	printf("%d",a);
  
  return 0;
}