diff --git a/.gitignore b/.gitignore
index cab31f3..ad1274f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -55,3 +55,6 @@ rules.ninja
 
 # Git
 COMMIT_MESSAGE
+
+docs
+docs/images
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a427c8d..e063419 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,18 +22,27 @@ set(CPM_DOWNLOAD_LOCATION
 )
 
 if(NOT EXISTS ${CPM_DOWNLOAD_LOCATION})
+
     message(STATUS "Downloading CPM.cmake...")
 
     file(
         DOWNLOAD
-        https://github.com/cpm-cmake/CPM.cmake/releases/download/v${CPM_DOWNLOAD_VERSION}/CPM.cmake
-        ${CPM_DOWNLOAD_LOCATION}
+        "https://github.com/cpm-cmake/CPM.cmake/releases/download/v${CPM_DOWNLOAD_VERSION}/CPM.cmake"
+        "${CPM_DOWNLOAD_LOCATION}"
+        STATUS download_status
     )
+
+    list(GET download_status 0 status_code)
+
+    if(NOT status_code EQUAL 0)
+        message(FATAL_ERROR
+            "Failed to download CPM.cmake"
+        )
+    endif()
+
 endif()
 
-include(${CPM_DOWNLOAD_LOCATION})
-
-include(cmake/CPM.cmake)
+include("${CPM_DOWNLOAD_LOCATION}")
 
 CPMAddPackage(
     NAME arraylist
diff --git a/src/main.c b/src/main.c
index f783a5a..1fe9d13 100644
--- a/src/main.c
+++ b/src/main.c
@@ -5,23 +5,28 @@
 int main(void) {
     Graph *graph = graph_create(GRAPH_UNDIRECTED);
 
-    graph_add_vertex(graph);
-    graph_add_vertex(graph);
-    graph_add_vertex(graph);
-    graph_add_vertex(graph);
-    graph_add_vertex(graph);
-    graph_add_vertex(graph);
+    graph_add_vertex(graph); // 0
+    graph_add_vertex(graph); // 1
+    graph_add_vertex(graph); // 2
+    graph_add_vertex(graph); // 3
+    graph_add_vertex(graph); // 4
+    graph_add_vertex(graph); // 5
+    graph_add_vertex(graph); // 6
+    graph_add_vertex(graph); // 7
 
-    graph_connect_vertex(graph, 0, 1, 9);
-    graph_connect_vertex(graph, 0, 2, 4);
-    graph_connect_vertex(graph, 1, 2, 2);
-    graph_connect_vertex(graph, 1, 4, 3);
-    graph_connect_vertex(graph, 1, 3, 7);
-    graph_connect_vertex(graph, 2, 3, 1);
-    graph_connect_vertex(graph, 2, 4, 6);
-    graph_connect_vertex(graph, 3, 4, 4);
-    graph_connect_vertex(graph, 3, 5, 8);
-    graph_connect_vertex(graph, 4, 5, 2);
+    graph_connect_vertex(graph, 0, 1, 5);
+    graph_connect_vertex(graph, 0, 2, 2);
+    graph_connect_vertex(graph, 1, 2, 1);
+    graph_connect_vertex(graph, 1, 3, 3);
+    graph_connect_vertex(graph, 1, 4, 12);
+    graph_connect_vertex(graph, 2, 3, 7);
+    graph_connect_vertex(graph, 2, 5, 10);
+    graph_connect_vertex(graph, 3, 4, 2);
+    graph_connect_vertex(graph, 3, 5, 6);
+    graph_connect_vertex(graph, 4, 6, 1);
+    graph_connect_vertex(graph, 5, 6, 3);
+    graph_connect_vertex(graph, 5, 7, 5);
+    graph_connect_vertex(graph, 6, 7, 2);
 
     DijkstraResult result;
     graph_dijkstra(graph, 0, &result);