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>
#include <stdlib.h>
#include <string.h>

int main(){
    char day[8]={};
    int next = 0;
    scanf("%s", day);

    if(strcmp(day, "SUN")==0){
        next = 7;
    }else if(strcmp(day, "MON")==0){
        next = 6;
    }else if(strcmp(day, "TUE")==0){
        next = 5;
    }else if(strcmp(day, "WED")==0){
        next = 4;
    }else if(strcmp(day, "THU")==0){
        next = 3;
    }else if(strcmp(day, "FRI")==0){
        next = 2;
    }else if(strcmp(day, "SAT")==0){
        next = 1;
    }

    printf("%d\n", next);

    return 0;
}