def search_grid_point(R):
    
    grid_number = 0
    
    R_int = math.floor(R)
    
    for i in range(R_int):
        
        y = math.sqrt(R-i*i)
        
        if isinstance(y,int) == True:
            
            grid_number += 4
        
        else:
            
            pass
        
        
    return grid_number
    
    
def main():
    
    X,Y = list(map(int,input().split()))
    
    if X == Y:
        
        
        print(search_grid_point(X))
        
    else:
        
        grid_list = []
        
        for i in range(X,Y+1):
            
            grid_list.append(search_grid_point(i))
            
        print(max(grid_list))
    
if __name__ == '__main__':
	main()