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