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(void) {
  char S[3];
  scanf("%s", S);
  if (!strcmp(S, "SUN")) {
    printf("7\n");
  } else if (!strcmp(S, "MON")) {
    printf("6\n");
  } else if (!strcmp(S, "TUE")) {
    printf("5\n");
  } else if (!strcmp(S, "WED")) {
    printf("4\n");
  } else if (!strcmp(S, "THU")) {
    printf("3\n");
  } else if (!strcmp(S, "FRI")) {
    printf("2\n");
  } else if (!strcmp(S, "SAT")) {
    printf("1\n");
  }
  return 0;
}