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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>

char data[7][4]={"SUN","MON","TUE","WED","THU","FRI","SAT"};

int main()
{
    char s[4];
    scanf("%s",s);
    for(int i=0;i<7;i++)
    {
        for(int j=0;j<3;j++)
            if(s[j]!=data[i][j]) goto DIFF;
        printf("%d\n",7-i);
        return 0;
DIFF:;
    }
}