import math

X,Y=map(int,input().split())

u=int(math.sqrt(10**7)+1)

LIST=[0]*(10**7+1)

DOUBLIST=[]
for i in range(u):
    DOUBLIST.append(i**2)

L=len(DOUBLIST)

for d in DOUBLIST:
    LIST[d]+=4

for i in range(1,L-1):
    for j in range(i+1,L):
        if DOUBLIST[i]+DOUBLIST[j]<=10**7:
            LIST[DOUBLIST[i]+DOUBLIST[j]]+=8
        else:
            break

print(max(LIST[X:Y+1]))