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)
{
        char s[4];

        scanf("%s",s);
        if(s[0]=='S'){
               if(s[1]=='U')    printf("7\n");
               else             printf("1\n");
        }
        else if(s[0]=='M') printf("6\n");
        else if(s[0]=='T'){
               if(s[1]=='H')      printf("5\n");
               else if(s[1]=='U') printf("3\n");
        }
        else if(s[0]=='W') printf("4\n");
        else if(s[0]=='F') printf("2\n");
        return 0;
}