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 <vector>
#include <algorithm>
#include <cmath>
#include <functional>

int main()
{
    std::string S;
    std::cin >> S;
    int day=0;
    if(S=="SUN"){
        day=7;
    }else if(S=="MON"){
        day=6;
    }else if(S=="TUE"){
        day=5;
    }else if(S=="WED"){
        day=4;
    }else if(S=="THU"){
        day=3;
    }else if(S=="FRI"){
        day=2;
    }else if(S=="SAT"){
        day=1;
    }
    std::cout << day << std::endl;
    return 0;
}