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>
using namespace std;
#define ALL(a)  (a).begin(),(a).end()
typedef long long ll;
using namespace std;
 
int main(){
    string s;
    cin >> s;

    int ans;
    if(s == "SUN") ans = 7;
    if(s == "SAT") ans = 1;
    if(s == "FRI") ans = 2;
    if(s == "THU") ans = 3;
    if(s == "WED") ans = 4;
    if(s == "TUE") ans = 5;
    if(s == "MON") ans = 6;

    

    cout << ans << endl;
}