A,B = map(int, input().split())
if A >= 13:
	print(B)
elif A >= 6:
    print(B // 2)
else:
	print(0) 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 A,B = map(int, input().split()) map(int, input().split()) A B = map(int, input().split()) map(int, input().split()) B
A,B = map(int, input().split())
if A >= 13:
	print(B)
elif A >= 6:
    print(B // 2)
else:
	print(0)