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 9.2.1) (judge verdict: Accepted)

#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>

#define ll long long
#define ull unsigned long long

using namespace std;

int main() {
	string s;
	cin >> s;

	int ans = 0;
	if (s=="SUN"){
		ans = 7;
	}
	if (s=="MON"){
		ans = 6;
	}
	if (s=="TUE"){
		ans = 5;
	}
	if (s=="WED"){
		ans = 4;
	}
	if (s=="THU"){
		ans = 3;
	}
	if (s=="FRI"){
		ans = 2;
	}
	if (s=="SAT"){
		ans = 1;
	}



	cout << ans << "\n";

	return 0;
}