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()
{
    char S[5];
    int days=0;
    scanf("%s",S);
    switch(S[0])
    {
        case'M':
            days=6;
            break;
        case'W':
            days=4;
            break;
        case'F':
            days=2;
            break;
        case'S':
            if(S[1]=='A')
                days=1;
            else
                days=7;
            break;
        case'T':
            if(S[1]=='U')
                days=5;
            else
                days=3;
    }
    printf("%d\n",days);
                
            
            
    
}