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 9.2.1) (judge verdict: Wrong Answer)

#include<stdio.h>
#include<string.h>
int main()
{
    char a[3];
    scanf("%s",a);
    if(strcmp(a,"SUN")==0)
    {
        printf("7\n");
    }
    else if(strcmp(a,"SAT")==0)
    {
        printf("1\n");
    }
     else if(strcmp(a,"MON")==0)
    {
        printf("6\n");
    }
   else if(strcmp(a,"TWE")==0)
    {
        printf("5\n");
    }
   else if(strcmp(a,"WED")==0)
    {
        printf("4\n");
    }
    else if(strcmp(a,"THU")==0)
    {
        printf("3\n");
    }
    else if(strcmp(a,"FRI")==0)
    {
        printf("2\n");
    }
}