a,b=(int(i) for i in input().split())
if a>=13:
	print(b)
elif a>=6:print(b//2)
else:print(0) int(i) for i in input().split() for i in input().split() i input().split() ().split () input split for i in input().split() int(i) int i a,b=(int(i) for i in input().split()) a (int(i) for i in 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 b=(int(i) for i in input().split()) (int(i) for i in input().split()) b a,b=(int(i) for i in input().split()) (int(i) for i in input().split()) a
a,b=(int(i) for i in input().split())
if a>=13:
	print(b)
elif a>=6:print(b//2)
else:print(0)
