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 <iostream>
# include <algorithm>
# include <vector>
# include <string>
# include <set>
# include <cmath>
# include <functional>
# include <utility>
# include <queue>
# include <stack>
# define MOD 1000000007
# define INF 9223372036854775806
#define rep(i,rept)	for(ll i = 0; i<rept;i++)
typedef long long ll;
using namespace std;
int main() {
	ll ans = 0, counter = 0, maxi = -1, mini = INF, pass = 0, sum = 0;
	//new
	string str;
	cin >> str;
	if (str == "SUN") cout << 7 << endl;
	if (str =="MON") cout << 6 << endl;
	if (str == "TUE") cout << 5 << endl;
	if (str == "WED") cout << 4 << endl;
	if (str == "THU") cout << 3 << endl;
	if (str == "FRI") cout << 2 << endl;
	if (str == "SAT") cout << 1 << endl;
}