a,b=map(int,input().split())
if a<6:
	print("0")
elif a<13:
	print(b//2)
else:
	print(b) a,b=map(int,input().split()) a map(int,input().split()) map int input().split() ().split () input split b if a<6:
	print("0")
elif a<13:
	print(b//2)
else:
	print(b) a<6 a 6 print("0") print "0" elif a<13:
	print(b//2) a<13 a 13 print(b//2) print b//2 b 2 print(b) print b b=map(int,input().split()) map(int,input().split()) b a,b=map(int,input().split()) map(int,input().split()) a
a,b=map(int,input().split())
if a<6:
	print("0")
elif a<13:
	print(b//2)
else:
	print(b)