std_input = input()
mi,ma = std_input.split(" ")

cnt = 0
cnt_list=[0]
for l in range(int(mi),int(ma)+1):
    for i in range(-round(int(l)**1/2),round(int(l)**1/2)):
        for j in range(-round(int(l)**1/2),round(int(l)**1/2)):
            if int(i)**2 + int(j)**2 == int(l):
                cnt +=1
    cnt_list.append(cnt)
    cnt = 0
print(max(cnt_list))