Gemini 3.1 Pro Preview vs Qwen3.7 Maxfor coding

```python
import re

def parse_duration(s):
    """
    Parses a duration string (e.g., '1h30m', '45s') and returns the total in seconds.
    Raises ValueError if the string is malformed.
    """
    if not isinstance(s, str):
        raise ValueError("Input must be a string")
        
    # Regex enforces the format and order (hours -> minutes -> seconds) with no spaces.
    # All groups are optional, but at least one must be present.
    pattern = r'^(?:(?P<hours>\d+)h)?(?:(?P<minutes>\d+)m)?(?:(?P<seconds>\d+)s)?$'
    match = re.match(patte…

```python
import re

def parse_duration(s: str) -> int:
    """
    Converts a duration string (e.g., '1h30m', '45s', '1h2m3s') into total seconds.
    Raises ValueError on malformed inputs.
    """
    if not isinstance(s, str):
        raise ValueError(f"Expected a string, got {type(s).__name__}")
        
    # Regex explanation:
    # ^             : Start of string
    # (?:(\d+)h)?   : Optional non-capturing group for hours, capturing the digits
    # (?:(\d+)m)?   : Optional non-capturing group for minutes, capturing the digits
    # (?:…