A,B=map(int, input().split())
if A>=13:
  print(B)
elif A>=6:
  print('{:.0f}'.format(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:
  print('{:.0f}'.format(B/2))
else:
  print(0) A>=13 A 13 print(B) print B elif A>=6:
  print('{:.0f}'.format(B/2)) A>=6 A 6 print('{:.0f}'.format(B/2)) print '{:.0f}'.format(B/2) '{:.0f}'.format '{:.0f}' format 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:
  print('{:.0f}'.format(B/2))
else:
  print(0)
