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: Accepted)

#include <stdio.h>

int main()
{
    char str[3];
    gets(str);
    if(str[0] == 'M'){
        printf("6\n");
    }
    else if(str[0] == 'T' && str[1] == 'U'){
        printf("5\n");
    }
    else if(str[0] == 'W'){
        printf("4\n");
    }
    else if(str[1] == 'H'){
        printf("3\n");
    }
    else if(str[0] == 'F'){
        printf("2\n");
    }
    else if(str[2] == 'T'){
        printf("1\n");
    }
    else if(str[2] == 'N'){
        printf("7\n");
    }
    return 0;

}