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>
int main(int argc, const char * argv[]) {
    char string[100];
    gets(string);
    if (strcmp(string, "SUN") == 0) {
        printf("%d\n", 7);
    }
    if (strcmp(string, "SAT") == 0) {
        printf("%d\n", 1);
    }
    if (strcmp(string, "MON") == 0) {
        printf("%d\n", 6);
    }
    if (strcmp(string, "TUE") == 0) {
        printf("%d\n", 5);
    }
    if (strcmp(string, "WED") == 0) {
        printf("%d\n", 4);
    }
    if (strcmp(string, "THU") == 0) {
        printf("%d\n", 3);
    }if (strcmp(string, "FRI") == 0) {
        printf("%d\n", 2);
    }   
    return 0;
}