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