#include <iostream>
#include <math.h>

constexpr int MAX_SIZE = 1e7+1;
int datum[MAX_SIZE] = {};

int main(void){
  int x, y, max = 0;scanf("%d %d", &x, &y);
  int i = 0, ii = 0, j, jj;
  while((ii = i * i) <= y){
  // ii * j * j >= x ~>
  const int edge = x - ii;
  j = floor(sqrt(x - ii));
  while((jj = j * j) < edge) j++;
    while((jj = j * j) <= y - ii){
      datum[ii + jj] += (i == 0 or j == 0) ? 2 : 4;
      j++;
    }
    i++;
  }
  for(int i = x; i <= y; i++) if(max < datum[i]) max = datum[i];
  printf("%d\n", max);
  return 0;
}