Problem:
Score : 100 points

Problem Statement

Takahashi, who is A years old, is riding a Ferris wheel.

It costs B yen (B is an even number) to ride the Ferris wheel if you are 13 years old or older, but children between 6 and 12 years old (inclusive) can ride it for half the cost, and children who are 5 years old or younger are free of charge. (Yen is the currency of Japan.)

Find the cost of the Ferris wheel for Takahashi.

Constraints

0 ≤ A ≤ 100

2 ≤ B ≤ 1000

B is an even number.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the cost of the Ferris wheel for Takahashi.

Sample Input 1

30 100

Sample Output 1

100

Takahashi is 30 years old now, and the cost of the Ferris wheel is 100 yen.

Sample Input 2

12 100

Sample Output 2

50

Takahashi is 12 years old, and the cost of the Ferris wheel is the half of 100 yen, that is, 50 yen.

Sample Input 3

0 100

Sample Output 3

0

Takahashi is 0 years old, and he can ride the Ferris wheel for free.

Solution in C++14 (GCC 5.4.1) (judge verdict: Runtime Error)

#include <iostream>
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <ctype.h>
using namespace std;
void select(int A[], int N)
{
    int i, j,t,minj;
    for(i = 0;i< N-1; i++)
    {
    minj = i;
    for(j = i;j<N;j++)
    {
        if (A[j] < A[minj])
            minj = j;
    }
    t = A[i];
    A[i] = A[minj];
    A[minj]= t;
    }
}

int main ()
{
    cin.tie(0); ios::sync_with_stdio(false);
   int N,M;
   cin >>N>>M;
   int *L = new int;
   int *R = new int;
   for(int i = 0; i< M;i++)
   {


     cin >>L[i]>>R[i];

   }
   select(L,M);
   select(R,M);
   int L1 = L[M-1];
   int R1 = R[0];

   unsigned long total=0;
    if(L1<=R1)
        total = R1-L1+1;
   cout << total <<endl;
    free(L);
    free(R);
        return 0;
}