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


if a>=13:
  print(b)
elif a>=6 and a<=12:
  print(int(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 and a<=12:
  print(int(b//2))
else:
  print(0) a>=13 a 13 print(b) print b elif a>=6 and a<=12:
  print(int(b//2)) a>=6 and a<=12 a>=6 a 6 a<=12 a 12 print(int(b//2)) print int(b//2) int 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 and a<=12:
  print(int(b//2))
else:
  print(0)