a, b = map(int,input().split())

if a >= 13:
  print(b)
  exit()
  
if a >= 6:
  b //= 2
  print(b)
  exit()
  

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)
  exit()
   a >= 13 a 13 print(b) print b exit() exit if a >= 6:
  b //= 2
  print(b)
  exit()
   a >= 6 a 6 b //= 2 b 2 print(b) print b exit() exit print(0) print 0 b = map(int,input().split()) map(int,input().split()) b b //= 2 2 b a, b = map(int,input().split()) map(int,input().split()) a
a, b = map(int,input().split())

if a >= 13:
  print(b)
  exit()
  
if a >= 6:
  b //= 2
  print(b)
  exit()
  

print(0)
