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