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: Accepted)

#include <stdio.h>

int main(void)
{

    char mj1[100];
    int i = 0;

    scanf("%s", mj1);

    if (mj1[i] == 'S')
    {
        i++;
        if (mj1[i] == 'U')
        {
            printf("7");
        }
            if (mj1[i] == 'A')
            {
                printf("1");
            }
    }
    if (mj1[i] == 'T')
    {
        i++;
        if (mj1[i] == 'U')
        {
            printf("5\n");
        }
        if (mj1[i] == 'H')
        {
            printf("3\n");
        }
    }
    if (mj1[i] == 'M')
    {
        printf("6\n");
    }
    if (mj1[i] == 'W')
    {
        printf("4\n");
    }
    if (mj1[i] == 'F')
    {
        printf("2\n");
    }

    return 0;
}