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>
#define rep(i, n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int, int>;

// main
int main(){
    string date; cin >> date;

    if(date == "SUN"){
        cout << 7 << endl;
    }else if (date == "MON")
    {
        cout << 6 << endl;
    }else if (date == "TUE")
    {
        cout << 5 << endl;
    }else if (date == "WED")
    {
        cout << 4 << endl;
    }else if (date == "THU")
    {
        cout << 3 << endl;
    }else if (date == "FRI")
    {
        cout << 2 << endl;
    }else if (date == "SAT")
    {
        cout << 1 << endl;
    }else{
    }
    return 0;
}