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>
#include<string.h>
int main()
{
	int i=0,j=0,count=0;
	char * string[] = {"MON","TUE","WED","THU","FRI","SAT","S"};
	char str[3];
	char * p = str;
	gets(str);
	for(i=0;i<7;i++)
	{
		if((strcmp(p,string[i])==0))
		{
				count = 6-i;
				if(strcmp(p,string[6])==0)
				{
					count = 7;
				}
		}
	}
	printf("%d",count);
	return 0;
}