import sys
def MI(): return map(int,sys.stdin.readline().rstrip().split())


A,B = MI()
if A <= 5:
    print(0)
elif A >= 13:
    print(B)
else:
    print(B//2) import sys sys def MI(): return map(int,sys.stdin.readline().rstrip().split()) MI A,B = MI() A MI() MI B if A <= 5:
    print(0)
elif A >= 13:
    print(B)
else:
    print(B//2) A <= 5 A 5 print(0) print 0 elif A >= 13:
    print(B) A >= 13 A 13 print(B) print B print(B//2) print B//2 B 2 B = MI() MI() B A,B = MI() MI() A def MI(): return map(int,sys.stdin.readline().rstrip().split()) def MI(): return map(int,sys.stdin.readline().rstrip().split()) MI
import sys
def MI(): return map(int,sys.stdin.readline().rstrip().split())


A,B = MI()
if A <= 5:
    print(0)
elif A >= 13:
    print(B)
else:
    print(B//2)
