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 _GLIBCXX_DEBUG
#define rep(i ,n) for(int i = 0 ; i < (n) ; i ++ )
#define mp(x,y) make_pair(x,y)
#define all(x) (x).begin(),(x).end()
using namespace std;
using ll = long long;
using vin=vector<int>;
using P = pair<int, int>;
const int inf=1e9+7;
const ll INF=1e18;

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