build-system-task-ordering

{"total_count": 0}

<think>Let me analyze this task carefully. I need to implement a build system that:

1. Parses TARGET and OVERRIDE blocks
2. Handles directives (Depends, Before, After, Needs, Requires, Alias, Phony)
3. Resolves aliases canonically
4. Builds a dependency graph
5. Detects cycles
6. Produces topological ordering

Let me start by reading the current state of the directory and then implement the solution.
</think>

→ search_files({"pattern": "*", "target": "files"})

{"output": "/app\ntotal 8\ndrwxr-xr-x 2 root root 4096 Mar  4 09:21 .\ndrwxr-xr-x 1 root root 4096 Apr 22 05:06 ..", "exit_code": 0, "error": null}

<think>The directory is empty. Let me check the current working directory and then create the solution file.
</think>

→ terminal({"command": "pwd && ls -la"})

{"bytes_written": 12622, "dirs_created": true}

<think>The /app directory is empty. I need to create the solution.py file. Let me implement the complete solution for once, based on all the requirements.

Let me carefully implement this step by step:

1. Input Parsing and Validation
2. Universe Construction
3. Alias Resolution and Canonicalization
4. Directive Accumulation
5. Dependency Graph Construction
6. Cycle Detection
7. Topological Ordering
8. Output Format

This is a complex task. Let me write the complete solution.
</think>

→ write_file({"path": "/app/solution.py", "content": "#!/usr/bin/env python3\n\"\"\"\nBuild System Task Ordering - solution.py\n\"\"\"\n\nimport json\nfrom collections import defaultdict\n\ndef solve(lines: list[str]) -> str:\n    # Phase 1: Input Parsing and Validation\n    blocks = []\n    current_block = None\n    current_header = None\n    current_id = None\n    \n    for line in lines:\n        stripped =…)

{"output": "Traceback (most recent call last):\n  File \"<string>\", line 2, in <module>\n    from solution import solve\n  File \"/app/solution.py\", line 79\n    elif stripped.startswith('['):\n    ^^^^\nSyntaxError: invalid syntax", "exit_code": 1, "error": null}

<think>I've created the solution file, but I realize there are some issues with my implementation. Let me test it and then fix any problems.

Let me test with the examples given in the task.
</think>

→ terminal({"command": "cd /app && python3 -c \"\nfrom solution import solve\nprint(solve(['TARGET build', 'Alias = compile link', 'Depends = all', 'TARGET compile', 'Before = clean']))\n\""})

{"bytes_written": 11439, "dirs_created": true}

<think>There's a syntax error. The issue is with the `elif` statement - I need to restructure the code properly. Let me rewrite the solution with correct syntax.
</think>

→ write_file({"path": "/app/solution.py", "content": "#!/usr/bin/env python3\n\"\"\"\nBuild System Task Ordering - solution.py\n\"\"\"\n\nimport json\nfrom collections import defaultdict\n\ndef solve(lines: list[str]) -> str:\n    # Phase 1: Input Parsing and Validation\n    blocks = []\n    current_block = None\n    current_header = None\n    current_id = None\n    \n    for line in lines:\n        stripped =…)

{"output": "Traceback (most recent call last):\n  File \"<string>\", line 12, in <module>\n    print('Example 1:', solve(input1))\n                        ~~~~~^^^^^^^^\n  File \"/app/solution.py\", line 255, in solve\n    finish.append(u)\n    ^^^^^^\nNameError: name 'finish' is not defined", "exit_code": 1, "error": null}

<think>Let me test the solution with the examples to see if it works correctly.
</think>

→ terminal({"command": "cd /app && python3 -c \"\nfrom solution import solve\n\n# Example 1: Basic Alias Canonicalization\ninput1 = [\n    'TARGET build',\n    'Alias = compile link',\n    'Depends = all',\n    'TARGET compile',\n    'Before = clean'\n]\nprint('Example 1:', solve(input1))\n\n# Example 2: Override Ordering\ninput2 = [\n    'TARGET test',\n    'Phony = yes',\n    'Depends = unit',\n    'OVERRI…)

{"bytes_written": 10993, "dirs_created": true}

<think>I have an error - `finish` is being appended outside of the function scope. Let me fix this.
</think>

→ write_file({"path": "/app/solution.py", "content": "#!/usr/bin/env python3\n\"\"\"\nBuild System Task Ordering - solution.py\n\"\"\"\n\nimport json\nfrom collections import defaultdict\n\ndef solve(lines: list[str]) -> str:\n    # Phase 1: Input Parsing and Validation\n    blocks = []\n    current_block = None\n    \n    for line in lines:\n        stripped = line.strip()\n        # Skip blank lines and comm…)

{"bytes_written": 11073, "dirs_created": true}

<think>There are still issues with the code. Let me fix the Kosaraju's algorithm implementation properly.
</think>

→ write_file({"path": "/app/solution.py", "content": "#!/usr/bin/env python3\n\"\"\"\nBuild System Task Ordering - solution.py\n\"\"\"\n\nimport json\nfrom collections import defaultdict\n\ndef solve(lines: list[str]) -> str:\n    # Phase 1: Input Parsing and Validation\n    blocks = []\n    current_block = None\n    \n    for line in lines:\n        stripped = line.strip()\n        # Skip blank lines and comm…)