import sys
def input():
    return sys.stdin.readline()[:-1]
def main():
#    N = int(input())
    A, B = map(int,input().split())
#    S = input()
    if A >= 13:
        print(B)
    elif A >= 6:
        print(B//2)
    else:
        print(0)
if __name__ == '__main__':
    main() import sys sys def input():
    return sys.stdin.readline()[:-1] input return sys.stdin.readline()[:-1] sys.stdin.readline()[:-1] sys.stdin.readline() sys.stdin.readline sys.stdin sys stdin readline :-1 -1 def main():
#    N = int(input())
    A, B = map(int,input().split())
#    S = input()
    if A >= 13:
        print(B)
    elif A >= 6:
        print(B//2)
    else:
        print(0) main A, B = map(int,input().split()) A map(int,input().split()) map int input().split() ().split () input split B if A >= 13:
        print(B)
    elif A >= 6:
        print(B//2)
    else:
        print(0) A >= 13 A 13 print(B) print B elif A >= 6:
        print(B//2)
     A >= 6 A 6 print(B//2) print B//2 B 2 print(0) print 0 if __name__ == '__main__':
    main() __name__ == '__main__' __name__ '__main__' main() main def input():
    return sys.stdin.readline()[:-1] def input():
    return sys.stdin.readline()[:-1] input def main():
#    N = int(input())
    A, B = map(int,input().split())
#    S = input()
    if A >= 13:
        print(B)
    elif A >= 6:
        print(B//2)
    else:
        print(0) def main():
#    N = int(input())
    A, B = map(int,input().split())
#    S = input()
    if A >= 13:
        print(B)
    elif A >= 6:
        print(B//2)
    else:
        print(0) main
import sys
def input():
    return sys.stdin.readline()[:-1]
def main():
#    N = int(input())
    A, B = map(int,input().split())
#    S = input()
    if A >= 13:
        print(B)
    elif A >= 6:
        print(B//2)
    else:
        print(0)
if __name__ == '__main__':
    main()
