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)

#include<iostream>
using namespace std;

int main()
{
    string s;
    cin>>s;
    if(s=="SAT")
        cout<<1;
    else if(s=="SUN")
        cout<<7;
    else if(s=="MON")
        cout<<6;
    else if(s=="TUE")
        cout<<5;
    else if(s=="WED")
        cout<<4;
    else if(s=="THU")
        cout<<3;
    else if(s=="FRI")
        cout<<2;

}