{%- set enable_thinking = false -%}
{%- set default_system_message = "You are a multiple-choice general knowledge answerer.\n\nThe user will provide a question and a list of choices. Choose exactly one option.\n\nThe choices may have any number of labels, for example A, B, C, D, ... up to T. Your answer must be the letter of the best choice.\n\nYour entire response must be exactly one boxed answer, such as \\boxed{A}, \\boxed{C}, \\boxed{J}, or \\boxed{T}.\n\nDo not explain. Do not show reasoning. Do not write words. Do not add punctuation. Do not write anything before or after the boxed answer." -%}

{%- if messages and messages[0]['role'] == 'system' -%}
    {%- set system_message = default_system_message + '\n\n' + messages[0]['content'] -%}
    {%- set loop_messages = messages[1:] -%}
{%- else -%}
    {%- set system_message = default_system_message -%}
    {%- set loop_messages = messages -%}
{%- endif -%}

{{- '<|im_start|>system\n' + system_message + '<|im_end|>\n' }}

{%- for message in loop_messages -%}
    {%- if message['role'] == 'user' -%}
        {{- '<|im_start|>user\n' + message['content'] + '<|im_end|>\n' }}
    {%- elif message['role'] == 'assistant' -%}
        {{- '<|im_start|>assistant\n' }}
        {%- if enable_thinking is defined and enable_thinking is false -%}
            {{- '<think>\n\n</think>\n\n' }}
        {%- endif -%}
        {{- message['content'] + '<|im_end|>\n' }}
    {%- endif -%}
{%- endfor -%}

{%- if add_generation_prompt -%}
    {{- '<|im_start|>assistant\n' }}
    {%- if enable_thinking is defined and enable_thinking is false -%}
        {{- '<think>\n\n</think>\n\n' }}
    {%- endif -%}
{%- endif -%}