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

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