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(void)
{
	int i,j;
	char s[4],d[8][4]={"a","MON","TUE","WED","THU","FRI","SAT","SUN"};
	scanf("%s", s);
	for(i=1; i<8; i++)
	{
		for(j=0; j<3; j++)
		{
			if(d[i][j]!=s[j])
			break;
			if(j==2)
			printf("%d\n", 7-i);
		}
	}
	
	return 0;
}