a,b= map(int,input().split())
if a >= 13:
    print(b)
elif a > 5:
    print(b//2)
elif a <= 5:
    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 > 5:
    print(b//2)
elif a <= 5:
    print(0) a >= 13 a 13 print(b) print b elif a > 5:
    print(b//2) a > 5 a 5 print(b//2) print b//2 b 2 elif a <= 5:
    print(0) a <= 5 a 5 print(0) print 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 a > 5:
    print(b//2)
elif a <= 5:
    print(0)