A,B = map(int,input().split())
L = B // 2
if A >= 13:
  print(B)
elif A <= 12 and A >= 6:
  print(L)
elif A <= 6:
  print(0) A,B = map(int,input().split()) A map(int,input().split()) map int input().split() ().split () input split B L = B // 2 L B // 2 B 2 if A >= 13:
  print(B)
elif A <= 12 and A >= 6:
  print(L)
elif A <= 6:
  print(0) A >= 13 A 13 print(B) print B elif A <= 12 and A >= 6:
  print(L) A <= 12 and A >= 6 A <= 12 A 12 A >= 6 A 6 print(L) print L elif A <= 6:
  print(0) A <= 6 A 6 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 L = B // 2 B // 2 L
A,B = map(int,input().split())
L = B // 2
if A >= 13:
  print(B)
elif A <= 12 and A >= 6:
  print(L)
elif A <= 6:
  print(0)