diff --git a/remote_judger/src/daemon.ts b/remote_judger/src/daemon.ts
index 0e88968..bfa52c5 100644
--- a/remote_judger/src/daemon.ts
+++ b/remote_judger/src/daemon.ts
@@ -7,6 +7,7 @@ import * as TIME from './utils/time';
 import { apply } from './vjudge';
 import path from 'path';
 import child from 'child_process';
+import htmlspecialchars from './utils/htmlspecialchars';
 
 proxy(superagent);
 
@@ -146,7 +147,8 @@ export default async function daemon(config: UOJConfig) {
             config.remote_problem_id,
             config.answer_language,
             code,
-            judge_time
+            judge_time,
+            config
           );
         } catch (err) {
           await request('/submit', {
@@ -157,7 +159,7 @@ export default async function daemon(config: UOJConfig) {
               status: 'Judged',
               score: 0,
               error: 'Judgment Failed',
-              details: `<error>No details.</error>`,
+              details: `<error>${htmlspecialchars(err.message)}</error>`,
             }),
             judge_time,
           });
diff --git a/remote_judger/src/providers/atcoder.ts b/remote_judger/src/providers/atcoder.ts
index f96bde7..757de3a 100644
--- a/remote_judger/src/providers/atcoder.ts
+++ b/remote_judger/src/providers/atcoder.ts
@@ -73,6 +73,10 @@ export default class AtcoderProvider implements IBasicProvider {
     this.account.endpoint ||= 'https://atcoder.jp';
   }
 
+  static constructFromAccountData(data) {
+    throw new Error('Method not implemented.');
+  }
+
   cookie: string[] = ['language=en'];
   csrf: string;
 
diff --git a/remote_judger/src/providers/codeforces.ts b/remote_judger/src/providers/codeforces.ts
index 1131c4b..76eb301 100644
--- a/remote_judger/src/providers/codeforces.ts
+++ b/remote_judger/src/providers/codeforces.ts
@@ -87,6 +87,10 @@ export default class CodeforcesProvider implements IBasicProvider {
     this.account.endpoint ||= 'https://codeforces.com';
   }
 
+  static constructFromAccountData(data) {
+    throw new Error('Method not implemented.');
+  }
+
   cookie: string[] = [];
   csrf: string;
 
diff --git a/remote_judger/src/providers/loj.ts b/remote_judger/src/providers/loj.ts
index cd79213..793b319 100644
--- a/remote_judger/src/providers/loj.ts
+++ b/remote_judger/src/providers/loj.ts
@@ -156,6 +156,10 @@ export default class LibreojProvider implements IBasicProvider {
     this.account.endpoint ||= 'https://api.loj.ac.cn/api';
   }
 
+  static constructFromAccountData(data) {
+    throw new Error('Method not implemented.');
+  }
+
   get(url: string) {
     logger.debug('get', url);
     if (!url.includes('//')) url = `${this.account.endpoint}${url}`;
diff --git a/remote_judger/src/providers/uoj.ts b/remote_judger/src/providers/uoj.ts
index eafe22b..a7ae179 100644
--- a/remote_judger/src/providers/uoj.ts
+++ b/remote_judger/src/providers/uoj.ts
@@ -99,6 +99,10 @@ export default class UOJProvider implements IBasicProvider {
     if (account.cookie) this.cookie = account.cookie;
   }
 
+  static constructFromAccountData(data) {
+    throw new Error('Method not implemented.');
+  }
+
   cookie: string[] = [];
   csrf: string;
 
diff --git a/remote_judger/src/vjudge.ts b/remote_judger/src/vjudge.ts
index 20aab01..dda6303 100644
--- a/remote_judger/src/vjudge.ts
+++ b/remote_judger/src/vjudge.ts
@@ -8,11 +8,7 @@ const logger = new Logger('vjudge');
 class AccountService {
   api: IBasicProvider;
 
-  constructor(
-    public Provider: BasicProvider,
-    public account: RemoteAccount,
-    private request: any
-  ) {
+  constructor(public Provider: BasicProvider, public account: RemoteAccount) {
     this.api = new Provider(account);
     this.main().catch(e =>
       logger.error(`Error occured in ${account.type}/${account.handle}`, e)
@@ -24,7 +20,81 @@ class AccountService {
     problem_id: string,
     language: string,
     code: string,
-    judge_time: string
+    next,
+    end
+  ) {
+    try {
+      const rid = await this.api.submitProblem(
+        problem_id,
+        language,
+        code,
+        id,
+        next,
+        end
+      );
+
+      if (!rid) return;
+
+      await this.api.waitForSubmission(problem_id, rid, next, end);
+    } catch (e) {
+      logger.error(e);
+
+      await end({ error: true, status: 'Judgment Failed', message: e.message });
+    }
+  }
+
+  async login() {
+    const login = await this.api.ensureLogin();
+    if (login === true) {
+      logger.info(`${this.account.type}/${this.account.handle}: logged in`);
+      return true;
+    }
+    logger.warn(
+      `${this.account.type}/${this.account.handle}: login fail`,
+      login || ''
+    );
+    return false;
+  }
+
+  async main() {
+    const res = await this.login();
+    if (!res) return;
+    setInterval(() => this.login(), Time.hour);
+  }
+}
+
+class VJudge {
+  private p_imports: Record<string, any> = {};
+  private providers: Record<string, AccountService> = {};
+
+  constructor(private request: any) {}
+
+  async importProvider(type: string) {
+    if (this.p_imports[type]) throw new Error(`duplicate provider ${type}`);
+    const provider = await import(`./providers/${type}`);
+
+    this.p_imports[type] = provider.default;
+  }
+
+  async addProvider(type: string) {
+    if (this.p_imports[type]) throw new Error(`duplicate provider ${type}`);
+    const provider = await import(`./providers/${type}`);
+    const account = provider.getAccountInfoFromEnv();
+
+    if (!account) throw new Error(`no account info for ${type}`);
+
+    this.p_imports[type] = provider.default;
+    this.providers[type] = new AccountService(provider.default, account);
+  }
+
+  async judge(
+    id: number,
+    type: string,
+    problem_id: string,
+    language: string,
+    code: string,
+    judge_time: string,
+    config
   ) {
     const next = async payload => {
       return await this.request('/submit', {
@@ -77,75 +147,51 @@ class AccountService {
       });
     };
 
-    try {
-      const rid = await this.api.submitProblem(
+    if (!config.remote_submit_type || config.remote_submit_type == 'bot') {
+      if (!this.providers[type]) throw new Error(`No provider ${type}`);
+
+      await this.providers[type].judge(
+        id,
         problem_id,
         language,
         code,
-        id,
         next,
         end
       );
+    } else if (config.remote_submit_type == 'my') {
+      if (!this.p_imports[type]) throw new Error(`No provider ${type}`);
 
-      if (!rid) return;
+      try {
+        const provider = this.p_imports[type].constructFromAccountData(
+          JSON.parse(config.remote_account_data)
+        );
 
-      await this.api.waitForSubmission(problem_id, rid, next, end);
-    } catch (e) {
-      logger.error(e);
-      await end({ error: true, status: 'Judgment Failed', message: e.message });
+        const rid = await provider.submitProblem(
+          problem_id,
+          language,
+          code,
+          id,
+          next,
+          end
+        );
+
+        if (!rid) return;
+
+        await provider.waitForSubmission(problem_id, rid, next, end);
+      } catch (e) {
+        logger.error(e);
+
+        await end({
+          error: true,
+          status: 'Judgment Failed',
+          message: e.message,
+        });
+      }
     }
-  }
 
-  async login() {
-    const login = await this.api.ensureLogin();
-    if (login === true) {
-      logger.info(`${this.account.type}/${this.account.handle}: logged in`);
-      return true;
-    }
-    logger.warn(
-      `${this.account.type}/${this.account.handle}: login fail`,
-      login || ''
+    throw new Error(
+      'Unsupported remote submit type: ' + config.remote_submit_type
     );
-    return false;
-  }
-
-  async main() {
-    const res = await this.login();
-    if (!res) return;
-    setInterval(() => this.login(), Time.hour);
-  }
-}
-
-class VJudge {
-  private providers: Record<string, AccountService> = {};
-
-  constructor(private request: any) {}
-
-  async addProvider(type: string) {
-    if (this.providers[type]) throw new Error(`duplicate provider ${type}`);
-    const provider = await import(`./providers/${type}`);
-    const account = provider.getAccountInfoFromEnv();
-
-    if (!account) throw new Error(`no account info for ${type}`);
-
-    this.providers[type] = new AccountService(
-      provider.default,
-      account,
-      this.request
-    );
-  }
-
-  async judge(
-    id: number,
-    type: string,
-    problem_id: string,
-    language: string,
-    code: string,
-    judge_time: string
-  ) {
-    if (!this.providers[type]) throw new Error(`no provider ${type}`);
-
-    await this.providers[type].judge(id, problem_id, language, code, judge_time);
   }
 }