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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include<bits/stdc++.h>
using namespace std;
 
#define int long long
#define endl "\n"
#define IOS ios::sync_with_stdio(false); cin.tie(nullptr); cout.precision(10); cout << fixed;
 
const int N = 1e5+5;
string a[] = {"SAT","FRI","THU","WED", "TUE", "MON", "SUN"};
 
int32_t main()
{
   string s;
   cin >> s;
   for(int i = 0; i < 7; i++)
   {
      if(a[i] == s)
         return cout << i+1, 0;
   }
   return 0;
}