diff --git a/doc/cp.txt b/doc/cp.txt
index ff67c4b..62cc2e1 100644
--- a/doc/cp.txt
+++ b/doc/cp.txt
@@ -77,7 +77,7 @@ Optional configuration with lazy.nvim: >
         opts = {
           debug = false,
           contests = {
-            default = {
+            codeforces = {
               cpp = {
                 compile = {
                   'g++', '-std=c++{version}', '-O2', '-Wall', '-Wextra',
@@ -89,7 +89,7 @@ Optional configuration with lazy.nvim: >
                   '-fsanitize=address,undefined', '-DLOCAL',
                   '{source}', '-o', '{binary}',
                 },
-                version = 20,
+                version = 23,
                 extension = "cc",
               },
               python = {
@@ -97,9 +97,9 @@ Optional configuration with lazy.nvim: >
                 debug = { 'python3', '{source}' },
                 extension = "py",
               },
+              default_language = "cpp",
               timeout_ms = 2000,
             },
-            codeforces = { cpp = { version = 23 } },
           },
           hooks = {
             before_run = function(ctx) vim.cmd.w() end,
@@ -107,64 +107,65 @@ Optional configuration with lazy.nvim: >
               -- ctx.problem_id, ctx.platform, ctx.source_file, etc.
               vim.cmd.w()
             end,
+            setup_code = function(ctx)
+              vim.wo.foldmethod = "marker"
+              vim.wo.foldmarker = "{{{,}}}"
+              vim.diagnostic.enable(false)
+            end,
           },
           snippets = { ... },  -- LuaSnip snippets
           tile = function(source_buf, input_buf, output_buf) ... end,
-          filename = function(contest, problem_id, problem_letter) ... end,
+          filename = function(contest, contest_id, problem_id, config, language) ... end,
         }
     }
 <
 
-Configuration options:
+*cp.Config*
 
-contests                        Dictionary of contest configurations - each contest inherits from 'default'.
+    Fields: ~
+      • {contests}      (`table<string,ContestConfig>`) Contest configurations.
+      • {hooks}         (`cp.Hooks`) Hook functions called at various stages.
+      • {snippets}      (`table[]`) LuaSnip snippet definitions.
+      • {debug}         (`boolean`, default: `false`) Show info messages
+                        during operation.
+      • {tile}?         (`function`) Custom window arrangement function.
+                        `function(source_buf, input_buf, output_buf)`
+      • {filename}?     (`function`) Custom filename generation function.
+                        `function(contest, contest_id, problem_id, config, language)`
+                        Should return full filename with extension.
+                        (default: uses problem_id or contest_id)
 
-  cpp                           C++ language configuration
-    compile                     Compile command template with {version}, {source}, {binary} placeholders
-    run                         Run command template with {binary} placeholder
-    debug                       Debug compile command template
-    version                     C++ standard version (e.g. 20, 23)
-    extension                   File extension for C++ files (default: "cc")
+*cp.ContestConfig*
 
-  python                        Python language configuration
-    run                         Run command template with {source} placeholder
-    debug                       Debug run command template
-    extension                   File extension for Python files (default: "py")
+    Fields: ~
+      • {cpp}               (`LanguageConfig`) C++ language configuration.
+      • {python}            (`LanguageConfig`) Python language configuration.
+      • {default_language}  (`string`, default: `"cpp"`) Default language when
+                            `--lang` not specified.
+      • {timeout_ms}        (`number`, default: `2000`) Execution timeout in
+                            milliseconds.
 
-  default_language              Default language when --lang not specified (default: "cpp")
+*cp.LanguageConfig*
 
-  timeout_ms                    Duration (ms) to run/debug before timeout
+    Fields: ~
+      • {compile}?      (`string[]`) Compile command template with
+                        `{version}`, `{source}`, `{binary}` placeholders.
+      • {run}           (`string[]`) Run command template.
+      • {debug}?        (`string[]`) Debug compile command template.
+      • {version}?      (`number`) Language version (e.g. 20, 23 for C++).
+      • {extension}     (`string`) File extension (e.g. "cc", "py").
+      • {executable}?   (`string`) Executable name for interpreted languages.
 
-snippets                        LuaSnip snippets by contest type
+*cp.Hooks*
 
-hooks                           Functions called at specific events
-  before_run                    Called before :CP run
-                                  function(ctx)
-                                ctx contains:
-                                  - problem_id: string
-                                  - platform: string (atcoder/codeforces/cses)
-                                  - contest_id: string
-                                  - source_file: string (path to source)
-                                  - input_file: string (path to .cpin)
-                                  - output_file: string (path to .cpout)
-                                  - expected_file: string (path to .expected)
-                                  - contest_config: table (language configs)
-                                (default: nil, do nothing)
-  before_debug                  Called before :CP debug
-                                  function(ctx)
-                                Same ctx as before_run
-                                (default: nil, do nothing)
-
-debug                           Show info messages during operation
-                                (default: false, silent operation)
-
-tile                            Custom function to arrange windows
-                                  function(source_buf, input_buf, output_buf)
-                                (default: nil, uses built-in layout)
-
-filename                        Custom function to generate filenames
-                                  function(contest, problem_id, problem_letter)
-                                (default: nil, uses problem_id + letter + ".cc")
+    Fields: ~
+      • {before_run}?   (`function`) Called before `:CP run`.
+                        `function(ctx: ProblemContext)`
+      • {before_debug}? (`function`) Called before `:CP debug`.
+                        `function(ctx: ProblemContext)`
+      • {setup_code}?   (`function`) Called after source file is opened.
+                        Used to configure buffer settings.
+                        `function(ctx: ProblemContext)`
 
 WORKFLOW						*cp-workflow*
 
@@ -232,7 +233,7 @@ Example: Setting up and solving AtCoder contest ABC324
 
 3. Start with problem A: >
     :CP a
-<   This creates abc324a.cc and scrapes test cases
+<   This creates a.cc and scrapes test cases
 
 4. Code your solution, then test: >
     :CP run
@@ -259,32 +260,26 @@ FILE STRUCTURE						*cp-files*
 
 cp.nvim creates the following file structure upon problem setup:
 
-    {contest_id}{problem_id}.cc     " Source file (e.g. abc324a.cc)
+    {problem_id}.{ext}              " Source file (e.g. a.cc, b.py)
     build/
-      {contest_id}{problem_id}.run  " Compiled binary
+      {problem_id}.run              " Compiled binary
     io/
-      {contest_id}{problem_id}.cpin     " Test input
-      {contest_id}{problem_id}.cpout    " Program output
-      {contest_id}{problem_id}.expected " Expected output
+      {problem_id}.cpin             " Test input
+      {problem_id}.cpout            " Program output
+      {problem_id}.expected         " Expected output
 
 The plugin automatically manages this structure and navigation between problems
 maintains proper file associations.
 
 SNIPPETS						*cp-snippets*
 
-cp.nvim integrates with LuaSnip for automatic template expansion. When you
-open a new problem file, type the contest name and press <Tab> to expand.
+cp.nvim integrates with LuaSnip for automatic template expansion. Built-in
+snippets include basic C++ and Python templates for each contest type.
 
-Built-in snippets include basic C++ and Python templates for each contest type.
-Custom snippets can be added via configuration.
+Snippet trigger names must EXACTLY match platform names ("codeforces" for
+CodeForces, "cses" for CSES, etc.).
 
-IMPORTANT: Snippet trigger names must exactly match the contest/platform names:
-- "codeforces" for Codeforces problems
-- "atcoder" for AtCoder problems
-- "cses" for CSES problems
-
-The plugin automatically selects the appropriate template based on the file
-extension (e.g., .cc files get C++ templates, .py files get Python templates).
+Custom snippets can be added via the `snippets` configuration field.
 
 HEALTH CHECK						*cp-health*
 
diff --git a/lua/cp/config.lua b/lua/cp/config.lua
index 0404ab9..d32e26c 100644
--- a/lua/cp/config.lua
+++ b/lua/cp/config.lua
@@ -26,19 +26,10 @@
 ---@field default_language? string
 ---@field timeout_ms? number
 
----@class HookContext
----@field problem_id string
----@field platform string
----@field contest_id string
----@field source_file string
----@field input_file string
----@field output_file string
----@field expected_file string
----@field contest_config table
-
 ---@class Hooks
----@field before_run? fun(ctx: HookContext)
----@field before_debug? fun(ctx: HookContext)
+---@field before_run? fun(ctx: ProblemContext)
+---@field before_debug? fun(ctx: ProblemContext)
+---@field setup_code? fun(ctx: ProblemContext)
 
 ---@class cp.Config
 ---@field contests table<string, ContestConfig>
@@ -57,89 +48,22 @@
 ---@field filename? fun(contest: string, contest_id: string, problem_id?: string, config: cp.Config, language?: string): string
 
 local M = {}
-
-local filetype_to_language = {
-	cc = "cpp",
-	c = "cpp",
-	py = "python",
-	py3 = "python",
-}
+local languages = require("cp.languages")
 
 ---@type cp.Config
 M.defaults = {
-	contests = {
-		default = {
-			cpp = {
-				compile = {
-					"g++",
-					"-std=c++{version}",
-					"-O2",
-					"-DLOCAL",
-					"-Wall",
-					"-Wextra",
-					"{source}",
-					"-o",
-					"{binary}",
-				},
-				run = { "{binary}" },
-				debug = {
-					"g++",
-					"-std=c++{version}",
-					"-g3",
-					"-fsanitize=address,undefined",
-					"-DLOCAL",
-					"{source}",
-					"-o",
-					"{binary}",
-				},
-				executable = nil,
-				version = 20,
-				extension = "cc",
-			},
-			python = {
-				compile = nil,
-				run = { "{source}" },
-				debug = { "{source}" },
-				executable = "python3",
-				extension = "py",
-			},
-			default_language = "cpp",
-			timeout_ms = 2000,
-		},
-		---@type PartialContestConfig
-		atcoder = {
-			---@type PartialLanguageConfig
-			cpp = { version = 23 },
-		},
-		---@type PartialContestConfig
-		codeforces = {
-			---@type PartialLanguageConfig
-			cpp = { version = 23 },
-		},
-		---@type PartialContestConfig
-		cses = {
-			---@type PartialLanguageConfig
-			cpp = { version = 20 },
-		},
-	},
+	contests = {},
 	snippets = {},
 	hooks = {
 		before_run = nil,
 		before_debug = nil,
+		setup_code = nil,
 	},
 	debug = false,
 	tile = nil,
 	filename = nil,
 }
 
----@param base_config table
----@param contest_config table
----@return table
-local function extend_contest_config(base_config, contest_config)
-	local result = vim.tbl_deep_extend("force", base_config, contest_config)
-	return result
-end
-
 ---@param user_config cp.UserConfig|nil
 ---@return cp.Config
 function M.setup(user_config)
@@ -161,6 +85,7 @@ function M.setup(user_config)
 			vim.validate({
 				before_run = { user_config.hooks.before_run, { "function", "nil" }, true },
 				before_debug = { user_config.hooks.before_debug, { "function", "nil" }, true },
+				setup_code = { user_config.hooks.setup_code, { "function", "nil" }, true },
 			})
 		end
 
@@ -168,13 +93,15 @@ function M.setup(user_config)
 			for contest_name, contest_config in pairs(user_config.contests) do
 				for lang_name, lang_config in pairs(contest_config) do
 					if type(lang_config) == "table" and lang_config.extension then
-						if not vim.tbl_contains(vim.tbl_keys(filetype_to_language), lang_config.extension) then
+						if
+							not vim.tbl_contains(vim.tbl_keys(languages.filetype_to_language), lang_config.extension)
+						then
 							error(
 								("Invalid extension '%s' for language '%s' in contest '%s'. Valid extensions: %s"):format(
 									lang_config.extension,
 									lang_name,
 									contest_name,
-									table.concat(vim.tbl_keys(filetype_to_language), ", ")
+									table.concat(vim.tbl_keys(languages.filetype_to_language), ", ")
 								)
 							)
 						end
@@ -185,43 +112,23 @@ function M.setup(user_config)
 	end
 
 	local config = vim.tbl_deep_extend("force", M.defaults, user_config or {})
-
-	local default_contest = config.contests.default
-	for contest_name, contest_config in pairs(config.contests) do
-		if contest_name ~= "default" then
-			config.contests[contest_name] = extend_contest_config(default_contest, contest_config)
-		end
-	end
-
 	return config
 end
 
----@param contest string
 ---@param contest_id string
 ---@param problem_id? string
----@param config cp.Config
----@param language? string
 ---@return string
-local function default_filename(contest, contest_id, problem_id, config, language)
+local function default_filename(contest_id, problem_id)
 	vim.validate({
-		contest = { contest, "string" },
 		contest_id = { contest_id, "string" },
 		problem_id = { problem_id, { "string", "nil" }, true },
-		config = { config, "table" },
-		language = { language, { "string", "nil" }, true },
 	})
 
-	local full_problem_id = contest_id:lower()
-	if contest == "atcoder" or contest == "codeforces" then
-		if problem_id then
-			full_problem_id = full_problem_id .. problem_id:lower()
-		end
+	if problem_id then
+		return problem_id:lower()
+	else
+		return contest_id:lower()
 	end
-
-	local contest_config = config.contests[contest] or config.contests.default
-	local target_language = language or contest_config.default_language
-	local language_config = contest_config[target_language]
-	return full_problem_id .. "." .. language_config.extension
 end
 
 M.default_filename = default_filename
diff --git a/lua/cp/execute.lua b/lua/cp/execute.lua
index a0874f1..78358bc 100644
--- a/lua/cp/execute.lua
+++ b/lua/cp/execute.lua
@@ -103,9 +103,9 @@ local function compile_generic(language_config, substitutions)
 	local compile_cmd = substitute_template(language_config.compile, substitutions)
 	logger.log(("compiling: %s"):format(table.concat(compile_cmd, " ")))
 
-	local start_time = vim.loop.hrtime()
+	local start_time = vim.uv.hrtime()
 	local result = vim.system(compile_cmd, { text = true }):wait()
-	local compile_time = (vim.loop.hrtime() - start_time) / 1000000
+	local compile_time = (vim.uv.hrtime() - start_time) / 1000000
 
 	if result.code == 0 then
 		logger.log(("compilation successful (%.1fms)"):format(compile_time))
@@ -129,7 +129,7 @@ local function execute_command(cmd, input_data, timeout_ms)
 
 	logger.log(("executing: %s"):format(table.concat(cmd, " ")))
 
-	local start_time = vim.loop.hrtime()
+	local start_time = vim.uv.hrtime()
 
 	local result = vim.system(cmd, {
 		stdin = input_data,
@@ -137,7 +137,7 @@ local function execute_command(cmd, input_data, timeout_ms)
 		text = true,
 	}):wait()
 
-	local end_time = vim.loop.hrtime()
+	local end_time = vim.uv.hrtime()
 	local execution_time = (end_time - start_time) / 1000000
 
 	local actual_code = result.code or 0
diff --git a/lua/cp/init.lua b/lua/cp/init.lua
index 72d0213..6ea45da 100644
--- a/lua/cp/init.lua
+++ b/lua/cp/init.lua
@@ -89,9 +89,9 @@ local function setup_problem(contest_id, problem_id, language)
 		state.test_cases = cached_test_cases
 	end
 
-	local ctx = problem.create_context(state.platform, contest_id, problem_id, config, language)
+	local scrape_ctx = problem.create_context(state.platform, contest_id, problem_id, config, language)
 
-	local scrape_result = scrape.scrape_problem(ctx)
+	local scrape_result = scrape.scrape_problem(scrape_ctx)
 
 	if not scrape_result.success then
 		logger.log("scraping failed: " .. (scrape_result.error or "unknown error"), vim.log.levels.WARN)
@@ -107,7 +107,7 @@ local function setup_problem(contest_id, problem_id, language)
 		end
 	end
 
-	vim.cmd.e(ctx.source_file)
+	vim.cmd.e(scrape_ctx.source_file)
 
 	if vim.api.nvim_buf_get_lines(0, 0, -1, true)[1] == "" then
 		local has_luasnip, luasnip = pcall(require, "luasnip")
@@ -135,13 +135,11 @@ local function setup_problem(contest_id, problem_id, language)
 		end
 	end
 
-	vim.api.nvim_set_option_value("winbar", "", { scope = "local" })
-	vim.api.nvim_set_option_value("foldlevel", 0, { scope = "local" })
-	vim.api.nvim_set_option_value("foldmethod", "marker", { scope = "local" })
-	vim.api.nvim_set_option_value("foldmarker", "{{{,}}}", { scope = "local" })
-	vim.api.nvim_set_option_value("foldtext", "", { scope = "local" })
+	local ctx = problem.create_context(state.platform, state.contest_id, state.problem_id, config, language)
 
-	vim.diagnostic.enable(false)
+	if config.hooks and config.hooks.setup_code then
+		config.hooks.setup_code(ctx)
+	end
 
 	local source_buf = vim.api.nvim_get_current_buf()
 	local input_buf = vim.fn.bufnr(ctx.input_file, true)
@@ -179,16 +177,7 @@ local function run_problem()
 	local ctx = problem.create_context(state.platform, state.contest_id, state.problem_id, config)
 
 	if config.hooks and config.hooks.before_run then
-		config.hooks.before_run({
-			problem_id = problem_id,
-			platform = state.platform,
-			contest_id = state.contest_id,
-			source_file = ctx.source_file,
-			input_file = ctx.input_file,
-			output_file = ctx.output_file,
-			expected_file = ctx.expected_file,
-			contest_config = contest_config,
-		})
+		config.hooks.before_run(ctx)
 	end
 
 	vim.schedule(function()
@@ -212,16 +201,7 @@ local function debug_problem()
 	local ctx = problem.create_context(state.platform, state.contest_id, state.problem_id, config)
 
 	if config.hooks and config.hooks.before_debug then
-		config.hooks.before_debug({
-			problem_id = problem_id,
-			platform = state.platform,
-			contest_id = state.contest_id,
-			source_file = ctx.source_file,
-			input_file = ctx.input_file,
-			output_file = ctx.output_file,
-			expected_file = ctx.expected_file,
-			contest_config = contest_config,
-		})
+		config.hooks.before_debug(ctx)
 	end
 
 	vim.schedule(function()
diff --git a/lua/cp/languages.lua b/lua/cp/languages.lua
index 6884287..134d312 100644
--- a/lua/cp/languages.lua
+++ b/lua/cp/languages.lua
@@ -8,7 +8,6 @@ M.filetype_to_language = {
 	cc = M.CPP,
 	cxx = M.CPP,
 	cpp = M.CPP,
-	c = M.CPP,
 	py = M.PYTHON,
 	py3 = M.PYTHON,
 }
diff --git a/lua/cp/problem.lua b/lua/cp/problem.lua
index caeac2c..088b908 100644
--- a/lua/cp/problem.lua
+++ b/lua/cp/problem.lua
@@ -26,9 +26,30 @@ function M.create_context(contest, contest_id, problem_id, config, language)
 		language = { language, { "string", "nil" }, true },
 	})
 
-	local filename_fn = config.filename or require("cp.config").default_filename
-	local source_file = filename_fn(contest, contest_id, problem_id, config, language)
-	local base_name = vim.fn.fnamemodify(source_file, ":t:r")
+	local contest_config = config.contests[contest]
+	if not contest_config then
+		error(("No contest config found for '%s'"):format(contest))
+	end
+
+	local target_language = language or contest_config.default_language
+	local language_config = contest_config[target_language]
+	if not language_config then
+		error(("No language config found for '%s' in contest '%s'"):format(target_language, contest))
+	end
+	if not language_config.extension then
+		error(("No extension configured for language '%s' in contest '%s'"):format(target_language, contest))
+	end
+
+	local base_name
+	if config.filename then
+		local source_file = config.filename(contest, contest_id, problem_id, config, language)
+		base_name = vim.fn.fnamemodify(source_file, ":t:r")
+	else
+		local default_filename = require("cp.config").default_filename
+		base_name = default_filename(contest_id, problem_id)
+	end
+
+	local source_file = base_name .. "." .. language_config.extension
 
 	return {
 		contest = contest,
diff --git a/lua/cp/window.lua b/lua/cp/window.lua
index 72ebe8b..767a6d4 100644
--- a/lua/cp/window.lua
+++ b/lua/cp/window.lua
@@ -10,6 +10,7 @@
 ---@field height integer
 
 local M = {}
+local languages = require("cp.languages")
 
 function M.clearcol()
 	vim.api.nvim_set_option_value("number", false, { scope = "local" })
@@ -78,7 +79,7 @@ function M.restore_layout(state, tile_fn)
 		local source_file
 		if source_files ~= "" then
 			local files = vim.split(source_files, "\n")
-			local valid_extensions = { "cc", "cpp", "cxx", "c", "py", "py3" }
+			local valid_extensions = vim.tbl_keys(languages.filetype_to_language)
 			for _, file in ipairs(files) do
 				local ext = vim.fn.fnamemodify(file, ":e")
 				if vim.tbl_contains(valid_extensions, ext) then
@@ -87,11 +88,9 @@ function M.restore_layout(state, tile_fn)
 				end
 			end
 			source_file = source_file or files[1]
-		else
-			source_file = problem_id .. ".cc"
 		end
 
-		if vim.fn.filereadable(source_file) == 0 then
+		if not source_file or vim.fn.filereadable(source_file) == 0 then
 			return
 		end
 
diff --git a/plugin/cp.lua b/plugin/cp.lua
index f96db7f..9e19695 100644
--- a/plugin/cp.lua
+++ b/plugin/cp.lua
@@ -26,8 +26,10 @@ end, {
 			end, lang_completions)
 		end
 
-		if ArgLead == "--lang" then
-			return { "--lang" }
+		if ArgLead:match("^%-") and not ArgLead:match("^--lang") then
+			return vim.tbl_filter(function(completion)
+				return completion:find(ArgLead, 1, true) == 1
+			end, { "--lang" })
 		end
 
 		local args = vim.split(vim.trim(CmdLine), "%s+")
@@ -43,7 +45,6 @@ end, {
 
 		if num_args == 2 then
 			local candidates = { "--lang" }
-			vim.list_extend(candidates, platforms)
 			vim.list_extend(candidates, actions)
 			local cp = require("cp")
 			local context = cp.get_current_context()
@@ -56,6 +57,8 @@ end, {
 						table.insert(candidates, problem.id)
 					end
 				end
+			else
+				vim.list_extend(candidates, platforms)
 			end
 			return vim.tbl_filter(function(cmd)
 				return cmd:find(ArgLead, 1, true) == 1
diff --git a/readme.md b/readme.md
index 8cafc5e..0cf652f 100644
--- a/readme.md
+++ b/readme.md
@@ -4,6 +4,8 @@ neovim plugin for competitive programming.
 
 https://private-user-images.githubusercontent.com/62671086/489116291-391976d1-c2f4-49e6-a79d-13ff05e9be86.mp4?jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.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.MBK5q_Zxr0gWuzfjwmSbB7P7dtWrATrT5cDOosdPRuQ
 
+[video config](https://github.com/barrett-ruth/dots/blob/main/nvim/lua/plugins/cp.lua)
+
 > Sample test data from [codeforces](https://codeforces.com) is scraped via [cloudscraper](https://github.com/VeNoMouS/cloudscraper). Use at your own risk.
 
 ## Features
diff --git a/scrapers/codeforces.py b/scrapers/codeforces.py
index 4610ae9..8e89b0a 100644
--- a/scrapers/codeforces.py
+++ b/scrapers/codeforces.py
@@ -30,7 +30,7 @@ def scrape(url: str) -> list[tuple[str, str]]:
                     lines = [div.get_text().strip() for div in divs]
                     text = "\n".join(lines)
                 else:
-                    text = inp_pre.get_text().replace("\r", "")
+                    text = inp_pre.get_text().replace("\r", "").strip()
                 all_inputs.append(text)
 
         for out_section in output_sections:
@@ -41,7 +41,7 @@ def scrape(url: str) -> list[tuple[str, str]]:
                     lines = [div.get_text().strip() for div in divs]
                     text = "\n".join(lines)
                 else:
-                    text = out_pre.get_text().replace("\r", "")
+                    text = out_pre.get_text().replace("\r", "").strip()
                 all_outputs.append(text)
 
         if all_inputs and all_outputs:
diff --git a/selene.toml b/selene.toml
index df08b7c..47b9138 100644
--- a/selene.toml
+++ b/selene.toml
@@ -1,4 +1 @@
-std = "vim"
-
-[config]
-lua52 = true
+std = "lua51+vim"