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