// ⚠️ 易错点3：此处返回n而非0（完全有序无需排序，长度为0）
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Number (3): Everything in this space must add up to 3. The answer is 0-2, placed vertically; 1-3, placed vertically.
Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10217-z
This is an especially important point when it comes to work communications, with many white collar workers now using chat platforms like Slack and Microsoft Teams rather than email to communicate.