diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 93fcd58..eb386da 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,4 +38,4 @@ jobs:
         run: ./build.py ${{ matrix.build.args }}
 
       - name: Test
-        run: ./build/bin/leetcode_test
+        run: ./build/bin/test_leetcode
diff --git a/build.py b/build.py
index 250c4f1..dfc1fa7 100755
--- a/build.py
+++ b/build.py
@@ -2,6 +2,7 @@
 import os
 import sys
 import argparse
+import subprocess
 
 parser = argparse.ArgumentParser(description='build')
 build_type_group = parser.add_mutually_exclusive_group()
@@ -9,10 +10,23 @@
 build_type_group.add_argument('-r', '--release', dest='build_type', action='store_const', const='Release')
 parser.set_defaults(build_type='Release')
 parser.add_argument('-a', '--asan', action='store_const', const='ON', default='OFF')
+parser.add_argument('-j', '--jobs', type=int, default=os.cpu_count())
 
 args = parser.parse_args()
 
-cmake_args = f'-DCMAKE_BUILD_TYPE={args.build_type} '
+cmake_args = ''
+
+def has_ninja():
+    try:
+        result = subprocess.run(['ninja', '--version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        return result.returncode == 0
+    except Exception:
+        return False
+
+if has_ninja():
+    cmake_args += '-G Ninja '
+
+cmake_args += f'-DCMAKE_BUILD_TYPE={args.build_type} '
 cmake_args += f'-DENABLE_ASAN={args.asan} '
 
 def system_errexit(command: str):
@@ -27,5 +41,6 @@ def system_errexit(command: str):
 if not os.path.exists('build'):
     os.mkdir('build')
 os.chdir('build')
+
 system_errexit(f'cmake {cmake_args} ..')
-system_errexit('cmake --build .')
+system_errexit(f'cmake --build . -- -j{args.jobs}')
diff --git a/leetcode/2011/solution.hpp b/leetcode/2011/solution.hpp
index c754031..b296321 100644
--- a/leetcode/2011/solution.hpp
+++ b/leetcode/2011/solution.hpp
@@ -20,7 +20,7 @@ class Solution {
 };
 } // namespace approach1
 
-// 方法2：++计数
+// 方法2：计数
 namespace approach2 {
 class Solution {
 public:
diff --git a/leetcode/CMakeLists.txt b/leetcode/CMakeLists.txt
index 6385912..2e8b71f 100644
--- a/leetcode/CMakeLists.txt
+++ b/leetcode/CMakeLists.txt
@@ -1,9 +1,10 @@
 # 构建测试对象库
 file(GLOB_RECURSE TEST_SRC "*/test.cpp")
-add_library(leetcode_test_o OBJECT ${TEST_SRC})
-target_include_directories(leetcode_test_o PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/test)
+add_library(test_leetcode_o OBJECT ${TEST_SRC})
+target_include_directories(test_leetcode_o PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/test)
+target_compile_definitions(test_leetcode_o PRIVATE PROBLEM_PATH=\"${CMAKE_CURRENT_SOURCE_DIR}\")
+target_compile_options(test_leetcode_o PRIVATE -Werror -Wall -Wextra -Wodr)
 
 # 构建测试二进制
-add_executable(leetcode_test)
-target_compile_options(leetcode_test PRIVATE -Werror -Wall -Wextra -Wodr)
-target_link_libraries(leetcode_test PRIVATE leetcode_test_o pthread gtest_main yaml-cpp)
+add_executable(test_leetcode)
+target_link_libraries(test_leetcode PRIVATE test_leetcode_o pthread gtest_main yaml-cpp)
diff --git a/leetcode/test/test.cpp b/leetcode/test/test.cpp
index 231c12c..49e0a0f 100644
--- a/leetcode/test/test.cpp
+++ b/leetcode/test/test.cpp
@@ -1,15 +1,19 @@
 #include "test.hpp"
 
+#include <cctype>
 #include <filesystem>
 #include <ranges>
 
-std::string GetTestSuitePath(const char *file) {
-    std::filesystem::path path{file};
-    return path.parent_path() / "test_suite.yaml";
+std::string GetTestSuitePath() {
+    std::filesystem::path path{PROBLEM_PATH};
+    std::string_view suite{testing::UnitTest::GetInstance()->current_test_info()->test_suite_name()};
+    std::string_view num{
+        suite.substr(std::distance(suite.begin(), std::find_if(suite.begin(), suite.end(), ::isdigit)))};
+    return path / num / "test_suite.yaml";
 }
 
 std::string GetTestCaseName() {
     std::string name{testing::UnitTest::GetInstance()->current_test_info()->name()};
-    std::ranges::transform(name, name.begin(), [](unsigned char c) { return std::tolower(c); });
+    name[0] = std::tolower(name[0]);
     return name;
 }
diff --git a/leetcode/test/test.hpp b/leetcode/test/test.hpp
index 0621b73..2fa8d3a 100644
--- a/leetcode/test/test.hpp
+++ b/leetcode/test/test.hpp
@@ -2,11 +2,10 @@
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 
-#define GET_TEST_CASE() ::GetTestCase<TestCase>(::GetTestSuitePath(__FILE__), ::GetTestCaseName())
 #define TEST_Y(suite, name) \
-    TEST(suite, name) { ::Expect(SolutionList{}, GET_TEST_CASE()); }
+    TEST(suite, name) { ::Expect(SolutionList{}, ::GetTestCase<TestCase>()); }
 
-std::string GetTestSuitePath(const char *file);
+std::string GetTestSuitePath();
 std::string GetTestCaseName();
 
 template <typename TestCase>
@@ -21,11 +20,11 @@ auto GetTestSuite(const std::string &testSuitePath) {
 }
 
 template <typename TestCase>
-const TestCase &GetTestCase(const std::string &testSuitePath, const std::string &key) {
-    static const std::string &path{testSuitePath};
+const TestCase &GetTestCase() {
+    static const auto path{GetTestSuitePath()};
     static const auto testSuite{GetTestSuite<TestCase>(path)};
-    assert(testSuitePath == path);
-    return testSuite.at(key);
+    assert(path == GetTestSuitePath());
+    return testSuite.at(::GetTestCaseName());
 }
 
 template <typename T>