a,b = map(int, input().split())
if a >= 13:
  print(b)
elif 5 < a < 13:
  print(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 5 < a < 13:
  print(b//2)
else:
  print(0) a >= 13 a 13 print(b) print b elif 5 < a < 13:
  print(b//2) 5 < a < 13 5 < a 5 a 13 print(b//2) print 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 a >= 13:
  print(b)
elif 5 < a < 13:
  print(b//2)
else:
  print(0)