A,B = map(int, input().split())

if A >= 13:
    print(B)

elif A <= 5:
    print(0)

else:
    print(round(B/2)) 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 A <= 5:
    print(0)

else:
    print(round(B/2)) A >= 13 A 13 print(B) print B elif A <= 5:
    print(0) A <= 5 A 5 print(0) print 0 print(round(B/2)) print round(B/2) round B/2 B 2 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 A <= 5:
    print(0)

else:
    print(round(B/2))