a, b = map(int, input().split())
if a <= 5:
    print("0")

elif 6 <= a and a <= 12:
    print(int(b/2))

elif a >= 13:
    print(b) a, b = map(int, input().split()) a map(int, input().split()) map int input().split() ().split () input split b if a <= 5:
    print("0")

elif 6 <= a and a <= 12:
    print(int(b/2))

elif a >= 13:
    print(b) a <= 5 a 5 print("0") print "0" elif 6 <= a and a <= 12:
    print(int(b/2)) 6 <= a and a <= 12 6 <= a 6 a a <= 12 a 12 print(int(b/2)) print int(b/2) int b/2 b 2 elif a >= 13:
    print(b) a >= 13 a 13 print(b) print b 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 <= 5:
    print("0")

elif 6 <= a and a <= 12:
    print(int(b/2))

elif a >= 13:
    print(b)