<div id="root" class="layout">
<div class="passp-flex-wrapper">
<div class="passp-page">
<div class="passp-bg passp-bg_13">
</div>
<div class="passp-flex-wrapper">
<div class="passp-content">
<div class="passp-auth">
<div class="passp-page-overlay">
</div>
<a data-lego="react" href="#" tabindex="0" class="control link link_theme_normal passp-previous-step-button passp-previous-step-button_hidden">
<span class="passp-previous-step-button__icon"></span></a>
<div class="passp-auth-header">
<a data-lego="react" href="https://passport.yandex.ru/registration?process_uuid=ca9928b5-6733-4dc2-b663-1b7d9d72b987" tabindex="0" class="control link link_theme_normal passp-auth-header-link passp-auth-header-link_visible">Зарегистрироваться</a>
<a data-lego="react" href="/auth/list?mode=edit" tabindex="0" class="control link link_theme_normal passp-auth-header-link">Другой аккаунт</a><a data-lego="react" href="//yandex.ru" tabindex="-1" class="logo logo_name_ys-ru-98x42 logo_type_link passp-logo passp-logo_ru">logo:yandex</a></div><div class="passp-auth-content"><div class="passp-page-visibility"></div>
<div class=""><div class="passp-auth-screen passp-add-account-page">
<div class="passp-add-account-page_has-social-block"><h1 class="passp-title "><span>Войдите, чтобы продолжить</span></h1>
<div class="passp-login-form">
<form method="post" action="https://passport.yandex.ru/auth">
<input type="hidden" name="retpath" value=""/>
<input type="hidden" name="fretpath" value=""/>
<input type="hidden" name="clean" value=""/>
<input type="hidden" name="service" value=""/>
<input type="hidden" name="origin" value=""/>
<input type="hidden" name="policy" value=""/>
<input type="hidden" name="is_pdd" value=""/>
<input type="hidden" name="csrf_token" value="a5e9ccde91eb48b4d27b88a85fa86471c356f49a:1574842095048"/>

 public void ppp() throws IOException, ParseException {
        Connection.Response  response = Jsoup.connect("https://passport.yandex.ru/auth")
                .method(Connection.Method.GET)
                .execute();

        Map<String,String>map=response.cookies();
        System.out.println(map);
        String scrf=null;
        Document document=Jsoup.parse(response.body());
        Element element=document.getElementsByClass("passp-login-form").first();
        Elements listEl=element.getElementsByTag("input");
        for(Element e:listEl){
            if(e.attr("name").equals("csrf_token")){
                scrf=e.attr("value");
            }
        }

Connection.Response ss=Jsoup.connect("https://passport.yandex.ru/registration-validations/auth/multi_step/start")
                .method(Connection.Method.POST)
                .ignoreContentType(true)
                .cookies(map)
                .data("login","stanisl4v.alekseev")
                .data("csrf_token",scrf)
                .execute();

{"status":"ok","magic_link_email":"stanisl4v.alekseev@yandex.ru","csrf_token":"02fdb5c42a58790ee2577cc5424952c2","can_authorize":true,"preferred_auth_method":"password","auth_methods":["password","magic_link","magic_x_token"],"track_id":"1d039a905db5035fb06dca588b37992816","id":"81b72168e3575b83fa915a0943015c6716"}