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