diff --git a/lua/cp/snippets.lua b/lua/cp/snippets.lua
index b20a847..da8d91f 100644
--- a/lua/cp/snippets.lua
+++ b/lua/cp/snippets.lua
@@ -70,12 +70,23 @@ int main() {{
 		),
 	}
 
-	local user_snippets = {}
-	for _, snippet in pairs(config.snippets or {}) do
-		table.insert(user_snippets, snippet)
+	local default_map = {}
+	for _, snippet in pairs(default_snippets) do
+		default_map[snippet.trigger] = snippet
+	end
+
+	local user_map = {}
+	for _, snippet in pairs(config.snippets or {}) do
+		user_map[snippet.trigger] = snippet
+	end
+
+	local merged_map = vim.tbl_extend("force", default_map, user_map)
+
+	local all_snippets = {}
+	for _, snippet in pairs(merged_map) do
+		table.insert(all_snippets, snippet)
 	end
 
-	local all_snippets = vim.list_extend(default_snippets, user_snippets)
 	ls.add_snippets("cpp", all_snippets)
 end
 
diff --git a/readme.md b/readme.md
index 79f326a..e195627 100644
--- a/readme.md
+++ b/readme.md
@@ -28,6 +28,7 @@ https://private-user-images.githubusercontent.com/62671086/489116291-391976d1-c2
 
 ## TODO
 
+- finer-tuned problem limits (i.e. per-problem codeforces time, memory)
 - better highlighting
 - test case management
 - USACO support