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

if A >= 13:
  print(B)
elif 6 <= A <= 12:
  print(int(B*0.5))
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(int(B*0.5))
else:
  print(0) A >= 13 A 13 print(B) print B elif 6 <= A <= 12:
  print(int(B*0.5)) 6 <= A <= 12 6 <= A 6 A 12 print(int(B*0.5)) print int(B*0.5) int B*0.5 B 0.5 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(int(B*0.5))
else:
  print(0)