a,b=[int (x) for x in input().split()]
if a>=13:
    print(b)
elif a<=5:
    print(0)
else:
    print(b//2) int (x) for x in input().split() for x in input().split() x input().split() ().split () input split for x in input().split() int (x) int x a,b=[int (x) for x in input().split()] a [int (x) for x in input().split()] b if a>=13:
    print(b)
elif a<=5:
    print(0)
else:
    print(b//2) a>=13 a 13 print(b) print b elif a<=5:
    print(0) a<=5 a 5 print(0) print 0 print(b//2) print b//2 b 2 a,b=[int (x) for x in input().split()] [int (x) for x in input().split()] a b=[int (x) for x in input().split()] [int (x) for x in input().split()] b
a,b=[int (x) for x in input().split()]
if a>=13:
    print(b)
elif a<=5:
    print(0)
else:
    print(b//2)