A, B = map(int, input().split())

if A >= 13:
  print(B)
elif A <= 5:
  print(0)
else:
  print(B // 2) 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 <= 5:
  print(0)
else:
  print(B // 2) A >= 13 A 13 print(B) print B elif A <= 5:
  print(0) A <= 5 A 5 print(0) print 0 print(B // 2) print B // 2 B 2 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 A <= 5:
  print(0)
else:
  print(B // 2)