A,B = map(int,input().split())
if A >= 13:
    print(B)
elif A >= 6 and A <= 12:
    print(int(B/2))
elif A <= 5:
    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 A >= 6 and A <= 12:
    print(int(B/2))
elif A <= 5:
    print(0) A >= 13 A 13 print(B) print B elif A >= 6 and A <= 12:
    print(int(B/2)) A >= 6 and A <= 12 A >= 6 A 6 A <= 12 A 12 print(int(B/2)) print int(B/2) int B/2 B 2 elif A <= 5:
    print(0) A <= 5 A 5 print(0) print 0 B = map(int,input().split()) map(int,input().split()) B A,B = map(int,input().split()) map(int,input().split()) A
A,B = map(int,input().split())
if A >= 13:
    print(B)
elif A >= 6 and A <= 12:
    print(int(B/2))
elif A <= 5:
    print(0)