From d431761a05bd84803b17ddc613f8e6fa33278922 Mon Sep 17 00:00:00 2001
From: kwu130 <38401766+kwu130@users.noreply.github.com>
Date: Wed, 8 Oct 2025 20:25:25 +0800
Subject: [PATCH] feat(ci): add parallel execution for all problems using GNU
 Parallel

---
 .github/workflows/run-all-problems.yml | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/.github/workflows/run-all-problems.yml b/.github/workflows/run-all-problems.yml
index 0291abf..6747d6e 100644
--- a/.github/workflows/run-all-problems.yml
+++ b/.github/workflows/run-all-problems.yml
@@ -20,7 +20,7 @@ jobs:
     - name: Install dependencies
       run: |
         sudo apt-get update
-        sudo apt-get install -y cmake build-essential
+        sudo apt-get install -y cmake build-essential parallel
 
     - name: Configure project
       run: cmake -S . -B build
@@ -30,15 +30,16 @@ jobs:
 
     - name: Run all executables (stop on failure)
       run: |
-        set -e
-        echo "Find and run all problems..."
-
-        find build -type f -perm /111 | while read exe; do
-          if [[ "$(basename "$exe")" =~ ^[0-9]+- ]]; then
-            echo "▶️ Run: $exe"
-            if ! "$exe"; then
-              echo "❌ Failed: $exe"
-              exit 1
-            fi
+        echo "🔍 Find all problems..."
+        find build -type f -perm /111 | grep -E '/[0-9]+-' > exec_list.txt
+        echo "✅ Found $(wc -l < exec_list.txt) problems"
+
+        echo "🚀 Run all problems..."
+        parallel -j $(nproc) --halt now,fail=1 '
+          exe="{}"
+          echo "▶️ Run: $exe"
+          if ! "$exe"; then
+            echo "❌ failed: $exe"
+            exit 1
           fi
-        done
+        ' :::: exec_list.txt