A,B = map(int,input().rstrip().split(" "))
if A >= 13:
    print(B)
elif A <= 5:
    print(0)
else:
    print(B // 2) A,B = map(int,input().rstrip().split(" ")) A map(int,input().rstrip().split(" ")) map int input().rstrip().split(" ") ().rstrip().split ().rstrip() ().rstrip () input rstrip split " " B if A >= 13:
    print(B)
elif A <= 5:
    print(0)
else:
    print(B // 2) A >= 13 A 13 print(B) print B elif A <= 5:
    print(0) A <= 5 A 5 print(0) print 0 print(B // 2) print B // 2 B 2 A,B = map(int,input().rstrip().split(" ")) map(int,input().rstrip().split(" ")) A B = map(int,input().rstrip().split(" ")) map(int,input().rstrip().split(" ")) B
A,B = map(int,input().rstrip().split(" "))
if A >= 13:
    print(B)
elif A <= 5:
    print(0)
else:
    print(B // 2)