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

if A >=13 :
    print(B)
elif A >= 6 and 12 >=A :
    print(math.floor(B/2))
else : 
    print(0) import math math 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 and 12 >=A :
    print(math.floor(B/2))
else : 
    print(0) A >=13 A 13 print(B) print B elif A >= 6 and 12 >=A :
    print(math.floor(B/2)) A >= 6 and 12 >=A A >= 6 A 6 12 >=A 12 A print(math.floor(B/2)) print math.floor(B/2) math.floor math floor B/2 B 2 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
import math
A, B =map(int,input().split())

if A >=13 :
    print(B)
elif A >= 6 and 12 >=A :
    print(math.floor(B/2))
else : 
    print(0)