diff --git a/packages/hydrojudge/package.json b/packages/hydrojudge/package.json
index 000528aaf..718493b5f 100644
--- a/packages/hydrojudge/package.json
+++ b/packages/hydrojudge/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.3.7",
+    "version": "2.3.8",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",
diff --git a/packages/hydrojudge/src/checkers.ts b/packages/hydrojudge/src/checkers.ts
index 2e58e0d8b..14b20cc24 100644
--- a/packages/hydrojudge/src/checkers.ts
+++ b/packages/hydrojudge/src/checkers.ts
@@ -59,6 +59,22 @@ const checkers: Record<string, Checker> = {
         };
     },
 
+    async strict(config) {
+        const { stdout } = await run('/usr/bin/diff usrout stdout', {
+            copyIn: {
+                usrout: { src: config.user_stdout },
+                stdout: { src: config.output },
+                ...config.copyIn,
+            },
+        });
+        const status = stdout ? STATUS.STATUS_WRONG_ANSWER : STATUS.STATUS_ACCEPTED;
+        return {
+            score: status === STATUS.STATUS_ACCEPTED ? config.score : 0,
+            status,
+            message: '',
+        };
+    },
+
     /*
      * argv[1]：输入
      * argv[2]：标准输出
diff --git a/packages/hydrojudge/src/judge/submit_answer.ts b/packages/hydrojudge/src/judge/submit_answer.ts
index 3ba1e5f5c..d8a56e660 100644
--- a/packages/hydrojudge/src/judge/submit_answer.ts
+++ b/packages/hydrojudge/src/judge/submit_answer.ts
@@ -1,25 +1,47 @@
+import { readFile } from 'fs-extra';
 import * as STATUS from '../status';
-import { check } from '../check';
 
 export async function judge({
     next, end, config, code,
 }) {
     next({ status: STATUS.STATUS_JUDGING, progress: 0 });
-    const [status, score, message] = await check({
-        stdout: config.answer,
-        user_stdout: code,
-        checker_type: 'default',
-        score: 100,
-        detail: config.detail,
-    });
-    next({
-        status,
-        progress: 100,
-        case: {
-            status, score, time_ms: 0, memory_kb: 0, message,
-        },
-    });
-    end({
-        status, score, time_ms: 0, memory_kb: 0,
+    code = code.replace(/\r/g, '');
+    const expected = (await readFile(config.subtasks[0].cases[0].output)).toString().replace(/\r/g, '');
+    if (config.subtasks.length === 1) {
+        const status = code.trim() === expected.trim() ? STATUS.STATUS_ACCEPTED : STATUS.STATUS_WRONG_ANSWER;
+        const score = status === STATUS.STATUS_ACCEPTED ? config.subtasks[0].score : 0;
+        next({
+            status,
+            progress: 100,
+            case: {
+                status, score, time_ms: 0, memory_kb: 0, message: '',
+            },
+        });
+        return end({
+            status, score, time_ms: 0, memory_kb: 0,
+        });
+    }
+    const outputs = code.split('\n');
+    let score = 0;
+    let totalStatus = 0;
+    const lines = expected.split('\n');
+    for (const i in config.subtasks) {
+        const subtask = config.subtasks[i];
+        let status = STATUS.STATUS_WRONG_ANSWER;
+        if (lines[i].trim() === outputs[i].trim()) {
+            score += subtask.score;
+            status = STATUS.STATUS_ACCEPTED;
+        }
+        totalStatus = Math.max(status, totalStatus);
+        next({
+            status: totalStatus,
+            process: (100 * config.subtasks.length) / (+i + 1),
+            case: {
+                status, score, time_ms: 0, memory_kb: 0, message: '',
+            },
+        }, i + 1);
+    }
+    return end({
+        status: totalStatus, score, time_ms: 0, memory_kb: 0,
     });
 }