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 <string.h>
#define N 100;

int main(void){
    char S[5];
    char x[7][5] = {"SAT","FRI","THU","WED","TUE","MON","SUN"};
    int A = 0;
    int n;
    
    scanf("%s",S);
    
    for(n=0;n<10;n++){
        if(strcmp(S,x[n]) == 0){
            A = n + 1;
            break;
        }
    }
   
    
    printf("%d\n",A);
    
}