chore: add knightPacking program

.gitignore

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+# Created by https://www.toptal.com/developers/gitignore/api/visualstudiocode,c++
+# Edit at https://www.toptal.com/developers/gitignore?templates=visualstudiocode,c++
+
+### C++ ###
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+### VisualStudioCode ###
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+!.vscode/*.code-snippets
+
+# Local History for Visual Studio Code
+.history/
+
+# Built Visual Studio Code Extensions
+*.vsix
+
+### VisualStudioCode Patch ###
+# Ignore all local history of files
+.history
+.ionide
+
+# End of https://www.toptal.com/developers/gitignore/api/visualstudiocode,c++
+

.vscode/settings.json

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+{
+    "files.associations": {
+        "iostream": "cpp"
+    }
+}

knightPacking/main.cpp

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+#include <iostream>
+using namespace std;
+
+int main(){
+    int x;
+    cin >> x;
+    if (x % 2 == 0)
+    {
+        cout << "second" << endl;
+    }
+    else {
+        cout << "first" << endl;
+    }
+    
+    return 0;
+}