D,Q=map(int,input().split())
if Q<D:
    print(0)
    exit(0)
elif D==Q:
    print(4)
    exit(0)
elif  D**2 < Q**2 < D**2*2:
    print(8)
    exit(0)
elif D**2 *2 == Q**2:
    print(4)
    exit(0)
else:
    print(0)