diff --git a/web/app/models/UOJProblemConfigure.php b/web/app/models/UOJProblemConfigure.php
index ca3d82b..79e1303 100644
--- a/web/app/models/UOJProblemConfigure.php
+++ b/web/app/models/UOJProblemConfigure.php
@@ -37,7 +37,7 @@ class UOJProblemConfigure {
 	private static function getCardHeader($title, $body_class = 'vstack gap-3') {
 		return <<<EOD
 		<div class="col-12 col-md-6">
-			<div class="card">
+			<div class="card h-100 overflow-hidden">
 				<div class="card-header fw-bold">
 					{$title}
 				</div>
@@ -99,10 +99,11 @@ class UOJProblemConfigure {
 
 		$this->simple_form->appendHTML(static::getCardHeader('测试点分值', ''));
 		$this->simple_form->appendHTML(<<<EOD
-			<details>
-				<summary>展开/收起全部</summary>
-				<div id="div-point-score-container" class="row g-3 mt-0"></div>
-			</details>
+		<details id="div-point-score-container-outer">
+			<summary>展开/收起全部</summary>
+			<div id="div-point-score-container" class="row g-3 mt-0"></div>
+		</details>
+		<div id="div-point-score-unavailable" style="display: none;">在启用 Subtask 时「测试点分值」不可用。</div>
 		EOD);
 		$this->simple_form->appendHTML(static::getCardFooter());
 		$this->simple_form->appendHTML(<<<EOD
@@ -123,6 +124,58 @@ class UOJProblemConfigure {
 		</script>
 		EOD);
 
+		$this->simple_form->appendHTML(static::getCardHeader('Subtask 配置', 'p-0'));
+		$this->simple_form->appendHTML(<<<EOD
+		<div class="form-check form-switch m-3">
+			<input class="form-check-input" type="checkbox" role="switch" id="input-enable_subtasks">
+			<label class="form-check-label" for="input-enable_subtasks">启用 Subtask</label>
+		</div>
+		<div id="div-subtasks-container"></div>
+		EOD);
+		$this->simple_form->appendHTML(static::getCardFooter());
+		$this->simple_form->appendHTML(<<<EOD
+		<script>
+			$(document).ready(function() {
+				$('#input-enable_subtasks').change(function() {
+					if (this.checked) {
+						$('#div-point-score-container-outer').hide();
+						$('#div-point-score-unavailable').show();
+						$('#div-subtasks-container').problem_configure_subtasks(problem_conf);
+					} else {
+						$('#div-point-score-container-outer').show();
+						$('#div-point-score-unavailable').hide();
+						$('#div-subtasks-container').empty();
+						$('.uoj-problem-configure-point-score-input').val('');
+
+						var subtask_keys = Object.keys(problem_conf).filter(function(key) {
+							return /^subtask_/.test(key);
+						});
+
+						for (var i = 0; i < subtask_keys.length; ++i) {
+							problem_conf[subtask_keys[i]] = '';
+						}
+
+						problem_conf['n_subtasks'] = '';
+					}
+
+					$('#problem-conf-preview').problem_conf_preview(problem_conf);
+				});
+
+				if (problem_conf['n_subtasks']) {
+					$('#input-enable_subtasks').prop('checked', true).trigger('change');
+				}
+			});
+		</script>
+		EOD);
+
+		$this->simple_form->appendHTML(<<<EOD
+		<script>
+			$(document).on("keydown", "form", function(event) { 
+				return event.key != "Enter";
+			});
+		</script>
+		EOD);
+
 		$this->simple_form->succ_href = $this->href;
 		$this->simple_form->config['form']['class'] = 'row gy-3';
 		$this->simple_form->config['submit_container']['class'] = 'col-12 text-center mt-3';
@@ -137,7 +190,7 @@ class UOJProblemConfigure {
 		$form->addSelect($key, [
 			'options' => $options,
 			'label' => $label,
-			'div_class' => 'row',
+			'div_class' => 'row gx-2',
 			'label_class' => 'col-form-label col-4',
 			'select_div_class' => 'col-8',
 			'default_value' => $this->problem_conf->getVal($key, $default_val),
@@ -157,7 +210,7 @@ class UOJProblemConfigure {
 		$form->addInput($key, [
 			'type' => 'number',
 			'label' => $label,
-			'div_class' => 'row',
+			'div_class' => 'row gx-2',
 			'label_class' => 'col-form-label col-4',
 			'input_div_class' => 'col-8',
 			'default_value' => $this->problem_conf->getVal($key, $default_val),
@@ -181,7 +234,7 @@ class UOJProblemConfigure {
 			'type' => 'number',
 			'label' => $label,
 			'input_attrs' => ['step' => 0.001],
-			'div_class' => 'row',
+			'div_class' => 'row gx-2',
 			'label_class' => 'col-form-label col-4',
 			'input_div_class' => 'col-8',
 			'default_value' => $this->problem_conf->getVal($key, $default_val),
@@ -209,7 +262,7 @@ class UOJProblemConfigure {
 		$this->conf_keys[$key] = true;
 		$form->addInput($key, [
 			'label' => $label,
-			'div_class' => 'row',
+			'div_class' => 'row gx-2',
 			'label_class' => 'col-form-label col-4',
 			'input_div_class' => 'col-8',
 			'default_value' => $this->problem_conf->getVal($key, $default_val),
@@ -235,11 +288,33 @@ class UOJProblemConfigure {
 		$conf = $this->problem_conf->conf;
 		$conf_keys = $this->conf_keys;
 		$n_tests = intval(UOJRequest::post('n_tests', 'validateUInt', $this->problem_conf->getVal('n_tests', 10)));
+		$n_subtasks = intval(UOJRequest::post('n_subtasks', 'validateUInt', $this->problem_conf->getVal('n_subtasks', 0)));
 
 		for ($i = 1; $i <= $n_tests; $i++) {
 			$conf_keys["point_score_$i"] = true;
 		}
 
+		$conf_keys['n_subtasks'] = true;
+		for ($i = 1; $i <= $n_subtasks; $i++) {
+			$conf_keys["subtask_type_$i"] = true;
+			$conf_keys["subtask_score_$i"] = true;
+			$conf_keys["subtask_end_$i"] = true;
+			$conf_keys["subtask_used_time_type_$i"] = true;
+
+			// $conf_keys["subtask_dependence_$i"] = true;
+
+			// $subtask_dependence_str = UOJRequest::post("subtask_dependence_$i", 'is_string', '');
+
+			// if ($subtask_dependence_str == 'many') {
+			// 	$subtask_dependence_cnt = 0;
+
+			// 	while (UOJRequest::post("subtask_dependence_{$i}_{$subtask_dependence_cnt}", 'is_string', '') != '') {
+			// 		$subtask_dependence_cnt++;
+			// 		$conf_keys["subtask_dependence_{$i}_{$subtask_dependence_cnt}"] = true;
+			// 	}
+			// }
+		}
+
 		foreach (array_keys($conf_keys) as $key) {
 			$val = UOJRequest::post($key, 'is_string', '');
 			if ($key === 'use_builtin_judger') {
diff --git a/web/js/uoj.js b/web/js/uoj.js
index 7345e94..e9baaa7 100644
--- a/web/js/uoj.js
+++ b/web/js/uoj.js
@@ -1212,10 +1212,12 @@ $.fn.problem_configure_point_scores = function(problem_conf) {
 		var _this = this;
 		var n_tests = parseInt(problem_conf['n_tests']);
 
-		$(this).html('');
+		$(this).empty();
 
 		if (isNaN(n_tests) || n_tests <= 0) {
 			$(this).html('不可用。');
+
+			return;
 		}
 
 		for (var i = 1; i <= n_tests; i++) {
@@ -1275,6 +1277,150 @@ $.fn.problem_configure_point_scores = function(problem_conf) {
 	});
 };
 
+// problem_configure: subtasks
+$.fn.problem_configure_subtasks = function(problem_conf) {
+	return $(this).each(function() {
+		var _this = this;
+		var n_subtasks = parseInt(problem_conf['n_subtasks'] || '0');
+
+		$(this).empty();
+
+		if (isNaN(n_subtasks)) {
+			$(this).html('不可用。');
+
+			return;
+		}
+
+		var input_n_subtasks = $('<input class="form-control" type="number" name="n_subtasks" id="input-n_subtasks" />');
+		var div_subtasks = $('<div class="list-group list-group-flush border-top" />');
+
+		if (n_subtasks) {
+			input_n_subtasks.val(n_subtasks);
+		}
+
+		$(this).append(
+			$('<div class="m-3" />').append(
+				$('<div class="row" />').append(
+					$('<div class="col-4" />').append('<label for="input-n_subtasks" class="col-form-label">子任务数</label>')
+				).append(
+					$('<div class="col-8" />').append(input_n_subtasks)
+				)
+			)
+		).append(div_subtasks);
+
+		input_n_subtasks.change(function() {
+			div_subtasks.empty();
+
+			var n_subtasks = parseInt(input_n_subtasks.val() || '0');
+			problem_conf['n_subtasks'] = input_n_subtasks.val();
+
+			for (var i = 1; i <= n_subtasks; i++) {
+				var input_subtask_type = $('<select class="form-select form-select-sm" name="subtask_type_' + i + '" id="input-subtask_type_' + i + '" />');
+				var input_subtask_end = $('<input class="form-control form-control-sm uoj-problem-configure-subtask-end-input" type="number" name="subtask_end_' + i + '" id="input-subtask_end_' + i + '" />');
+				var input_subtask_score = $('<input class="form-control form-control-sm uoj-problem-configure-subtask-score-input" type="number" name="subtask_score_' + i + '" id="input-subtask_score_' + i + '" />');
+				var input_subtask_used_time_type = $('<select class="form-select form-select-sm" name="subtask_used_time_type_' + i + '" id="input-subtask_used_time_type_' + i + '" />');
+
+				input_subtask_type
+					.append($('<option value="packed" />').text('错一个就零分'))
+					.append($('<option value="min" />').text('得分取所有测试点中的最小值'));
+				input_subtask_used_time_type
+					.append($('<option value="sum" />').text('全部相加'))
+					.append($('<option value="max" />').text('取所有测试点中的最大值'));
+
+				(function(i) {
+					input_subtask_type.change(function() {
+						problem_conf['subtask_type_' + i] = $(this).val();
+						$('#problem-conf-preview').problem_conf_preview(problem_conf);
+					});
+
+					input_subtask_end.change(function() {
+						problem_conf['subtask_end_' + i] = $(this).val();
+						$('#problem-conf-preview').problem_conf_preview(problem_conf);
+					})
+
+					input_subtask_score.change(function() {
+						problem_conf['subtask_score_' + i] = $(this).val();
+						$('#problem-conf-preview').problem_conf_preview(problem_conf);
+					});
+
+					input_subtask_used_time_type.change(function() {
+						problem_conf['subtask_used_time_type_' + i] = $(this).val();
+						$('#problem-conf-preview').problem_conf_preview(problem_conf);
+					});
+				})(i);
+
+				div_subtasks.append(
+					$('<div class="list-group-item" />').append(
+						$('<div class="fw-bold" />').text('Subtask #' + i)
+					).append(
+						$('<div />').append(
+							$('<div class="row mt-2" />').append(
+								$('<div class="col-sm-6" />').append('<label for="input-subtask_type_' + i + '" class="col-form-label col-form-label-sm">评分类型</label>')
+							).append(
+								$('<div class="col-sm-6" />').append(input_subtask_type)
+							)
+						).append(
+							$('<div class="row mt-2" />').append(
+								$('<div class="col-sm-6" />').append('<label for="input-subtask_end_' + i + '" class="col-form-label col-form-label-sm">最后一个测试点的编号</label>')
+							).append(
+								$('<div class="col-sm-6" />').append(input_subtask_end)
+							)
+						).append(
+							$('<div class="row mt-2" />').append(
+								$('<div class="col-sm-6" />').append('<label for="input-subtask_score_' + i + '" class="col-form-label col-form-label-sm">分数</label>')
+							).append(
+								$('<div class="col-sm-6" />').append(input_subtask_score)
+							)
+						).append(
+							$('<div class="row mt-2" />').append(
+								$('<div class="col-sm-6" />').append('<label for="input-subtask_used_time_type_' + i + '" class="col-form-label col-form-label-sm">程序用时统计方式</label>')
+							).append(
+								$('<div class="col-sm-6" />').append(input_subtask_used_time_type)
+							)
+						)
+					)
+				);
+			}
+
+			$('.uoj-problem-configure-subtask-score-input', _this).change(function() {
+				var full_score = 100;
+				var rest_subtasks = parseInt(problem_conf['n_subtasks'] || '10');
+				var score_type = problem_conf['score_type'] || 'int';
+	
+				$('.uoj-problem-configure-subtask-score-input', _this).each(function() {
+					var subtask_score = parseInt($(this).val());
+	
+					if (!isNaN(subtask_score)) {
+						full_score -= subtask_score;
+						rest_subtasks--;
+					}
+				});
+	
+				$('.uoj-problem-configure-subtask-score-input', _this).each(function() {
+					if ($(this).val() == '') {
+						var val = full_score / rest_subtasks;
+	
+						if (score_type == 'int') {
+							val = Math.floor(val);
+						} else {
+							var decimal_places = parseInt(score_type.substring(5));
+	
+							val = val.toFixed(decimal_places);
+						}
+	
+						$(this).attr('placeholder', val);
+					}
+				});
+			});
+
+			$('.uoj-problem-configure-subtask-score-input', _this).first().trigger('change');
+			$('#problem-conf-preview').problem_conf_preview(problem_conf);
+		});
+
+		input_n_subtasks.trigger('change');
+	});
+};
+
 // custom test
 function custom_test_onsubmit(response_text, div_result, url) {
 	if (response_text != '') {