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