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