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 LL long long
using namespace std;

const int N = 2e5 + 5;

int main() {

    string a; cin >> a;
    if(a == "SUN") {
        puts("7");
    }
    else if(a == "MON") {
        puts("6");
    }
    else if(a == "TUE") {
        puts("5");
    }
    else if(a == "WED") {
        puts("4");
    }
    else if(a == "THU") {
        puts("3");
    }
    else if(a == "FRI") {
        puts("2");
    }
    else if(a == "SAT") {
        puts("1");
    }
    return 0;
}