A, B = list(map(int,input().split()))
if A >= 13:
    print(B)
elif A >= 6 and A <= 12:
    print(B//2)
else:
    print(0) A, B = list(map(int,input().split())) A list(map(int,input().split())) list map(int,input().split()) map int input().split() ().split () input split B if A >= 13:
    print(B)
elif A >= 6 and A <= 12:
    print(B//2)
else:
    print(0) A >= 13 A 13 print(B) print B elif A >= 6 and A <= 12:
    print(B//2) A >= 6 and A <= 12 A >= 6 A 6 A <= 12 A 12 print(B//2) print B//2 B 2 print(0) print 0 A, B = list(map(int,input().split())) list(map(int,input().split())) A B = list(map(int,input().split())) list(map(int,input().split())) B
A, B = list(map(int,input().split()))
if A >= 13:
    print(B)
elif A >= 6 and A <= 12:
    print(B//2)
else:
    print(0)