update .gitignore

.gitignore

@@ -0,0 +1,2 @@
+*.cxx
+*.out

.vscode/settings.json

@@ -0,0 +1,48 @@
+{
+    "files.associations": {
+        "*.ipynb": "jupyter-notebook",
+        "ostream": "cpp",
+        "__bit_reference": "cpp",
+        "__config": "cpp",
+        "__locale": "cpp",
+        "__split_buffer": "cpp",
+        "__threading_support": "cpp",
+        "__verbose_abort": "cpp",
+        "array": "cpp",
+        "bitset": "cpp",
+        "cctype": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "complex": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "execution": "cpp",
+        "initializer_list": "cpp",
+        "ios": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "locale": "cpp",
+        "mutex": "cpp",
+        "new": "cpp",
+        "ratio": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "string": "cpp",
+        "string_view": "cpp",
+        "tuple": "cpp",
+        "typeinfo": "cpp",
+        "variant": "cpp",
+        "vector": "cpp",
+        "algorithm": "cpp"
+    }
+}