MOD = 10 ** 9 + 7
INF = 10 ** 10
import sys
sys.setrecursionlimit(100000000)
dy = (-1,0,1,0)
dx = (0,1,0,-1)

def main():
    x,y = map(int,input().split())
    square = []
    for i in range(10000):
        if i * i <= y:
            square.append(i * i)
    
    cnt = [0] * (y + 1)
    for q1 in square:
        for q2 in square:
            if x <= q1 + q2 <= y:
                if q1 == 0 or q2 == 0:
                    cnt[q1 + q2] += 2
                else:
                    cnt[q1 + q2] += 4
    
    ans = 0
    for i in range(x,y + 1):
        ans = max(ans,cnt[i])
    
    #print(cnt,square)
    print(ans)

if __name__ =='__main__':
    main()