diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index ed98d33..d5cb613 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -4,6 +4,8 @@
 ARG VARIANT="buster"
 FROM mcr.microsoft.com/vscode/devcontainers/base:0-${VARIANT}
 
+RUN sudo apt install gnupg2 -y
+
 # ** [Optional] Uncomment this section to install additional packages. **
 # RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
 #     && apt-get -y install --no-install-recommends <your-package-list-here>
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 4880f42..945d23f 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -14,7 +14,8 @@
 
 	// Add the IDs of extensions you want installed when the container is created.
 	"extensions": [
-		"rust-lang.rust-analyzer"
+		"rust-lang.rust-analyzer",
+		"LeetCode.vscode-leetcode"
 	],
 
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
diff --git a/.gitignore b/.gitignore
index c41cc9e..f07393c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
-/target
\ No newline at end of file
+/target
+Cargo.lock
+Cargo.toml
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..2a8169e
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,8 @@
+{
+    "leetcode.filePath": {
+        "default": {
+            "folder": "${kebab-case-name}",
+            "filename": "sol.${ext}"
+        }
+    }
+}
\ No newline at end of file