diff --git a/.vscode/ipch/a97e321484e884ff/helloceos.ipch b/.vscode/ipch/a97e321484e884ff/helloceos.ipch
new file mode 100644
index 0000000..1ad7c68
Binary files /dev/null and b/.vscode/ipch/a97e321484e884ff/helloceos.ipch differ
diff --git a/.vscode/ipch/a97e321484e884ff/mmap_address.bin b/.vscode/ipch/a97e321484e884ff/mmap_address.bin
new file mode 100644
index 0000000..96f7016
Binary files /dev/null and b/.vscode/ipch/a97e321484e884ff/mmap_address.bin differ
diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..4a498e1
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,10 @@
+{
+  "configurations": [
+    {
+      "type": "java",
+      "name": "CodeLens (Launch) - HelloCEOS",
+      "request": "launch",
+      "mainClass": "HelloCEOS"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/kwonmc/HelloCEOS.java b/kwonmc/HelloCEOS.java
new file mode 100644
index 0000000..bc9f0a7
--- /dev/null
+++ b/kwonmc/HelloCEOS.java
@@ -0,0 +1,5 @@
+class HelloCEOS {
+  public static void main(String[] args) {
+    System.out.println("Hello CEOS !");
+  }
+}
\ No newline at end of file
diff --git a/kwonmc/HelloCEOS.kt b/kwonmc/HelloCEOS.kt
new file mode 100644
index 0000000..dd7e3ae
--- /dev/null
+++ b/kwonmc/HelloCEOS.kt
@@ -0,0 +1 @@
+fun main() = println("Hello CEOS !")
\ No newline at end of file
diff --git a/kwonmc/helloceos.cpp b/kwonmc/helloceos.cpp
new file mode 100644
index 0000000..02512fd
--- /dev/null
+++ b/kwonmc/helloceos.cpp
@@ -0,0 +1,5 @@
+#include <iostream>
+
+int main(void) {
+  printf("Hello CEOS !");
+}
\ No newline at end of file
diff --git a/kwonmc/helloceos.js b/kwonmc/helloceos.js
new file mode 100644
index 0000000..d9bb67f
--- /dev/null
+++ b/kwonmc/helloceos.js
@@ -0,0 +1 @@
+console.log("Hello CEOS !")
\ No newline at end of file
diff --git a/kwonmc/helloceos.py b/kwonmc/helloceos.py
new file mode 100644
index 0000000..14199c6
--- /dev/null
+++ b/kwonmc/helloceos.py
@@ -0,0 +1 @@
+print("Hello CEOS !")
\ No newline at end of file