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 <map>
#include <string>
#include <utility>
#include <list>
#include <math.h>
#include <vector>
#include <algorithm>
#include<iomanip>
#include <unordered_map> 
#include <queue>

using namespace std;
typedef long long ll;
typedef pair<int, int> pp;

#define MOD 1000000007


int main() {
  string S;
  cin >> S;

  unordered_map<string, int> mp;
  mp["SUN"] = 7;
  mp["MON"] = 6;
  mp["TUE"] = 5;
  mp["WED"] = 4;
  mp["THU"] = 3;
  mp["FRI"] = 2;
  mp["SAT"] = 1;

  cout << mp[S];

  //for float, double precision
  //cout << std::fixed << setprecision(15);
  return 0;

}