diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000000000000000000000000000000000..31cdbbc34e515da00beb5dfa4c79cdc8b5e5777e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "solvers/hsgw"]
+	path = solvers/hsgw
+	url = git@togawa-gitlab:kento.hasegawa/adc2019solver.git
diff --git a/README.md b/README.md
index 195b4d98010a62bc1e735c3992d87385809dbacb..6659ef649da5761ca46679ddd7bf805e75aa0dad 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,8 @@ Ensemble solver system for the algorithm design content in DA symposium 2019
     - ADC2019 Systemのうち，Host, Solverそれぞれの役割の実装．
 + solutions/
     - 答えファイルの保存先
++ solvers/
+    - ソルバの実装
 + static/
     - GUIで使う静的ファイル
 + templates/
@@ -30,6 +32,14 @@ Ensemble solver system for the algorithm design content in DA symposium 2019
 + main.py
     - ADC2019 SystemのGUI, サーバ機能付き実装
 
+## ソルバの追加
+
+ソルバは以下のコマンドでgit submoduleとして追加する．
+```
+cd solers
+git submodule add [git repository] [folder name]
+```
+
 ## Our previous works
 
 + [adc2018-system](https://www.togawa.cs.waseda.ac.jp/gitlab/adc2018/adc2018-system)
diff --git a/solvers/hsgw b/solvers/hsgw
new file mode 160000
index 0000000000000000000000000000000000000000..b306364dc696270165a9c67921720e4c6acf6866
--- /dev/null
+++ b/solvers/hsgw
@@ -0,0 +1 @@
+Subproject commit b306364dc696270165a9c67921720e4c6acf6866