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

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