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 Perl (v5.18.2) (judge verdict: Runtime Error)

package MyApp;
use utf8;
use 5.016;

print func(map { chomp; $_ } <>);

sub func {
    while (my $line = shift) {
        my ($n1, $n2) = split / /, $line;
        push @result, func2($n1, $n2);
    }
    return join("\n", @result, '');
}

sub func2 {
    my ($n1, $n2) = @_;
    return $n2 if $n1 >= 13;
    return $n2 / 2 if $n1 >= 6;
    return 0;
}

1;
__END__