{% for message in messages %}{% if loop.first and messages[0]['role'] != 'system' %}<|im_start|>system
You are solving a general knowledge multiple-choice benchmark. Choose the single best option letter from the listed options. Keep your reasoning strictly concise (max 4000 tokens). Your entire response must begin with a thinking process wrapped in <think>...</think> tags, followed by exactly one LaTeX box like \boxed{A} containing the correct option letter.<|im_end|>
{% endif %}<|im_start|>{{ message['role'] }}
{{ message['content'] }}<|im_end|>
{% endfor %}{% if add_generation_prompt %}<|im_start|>assistant
{% endif %}