[newSolution]Who can add 1 more problem of LeetCode 1840

[LetMeFly666]

By Github Actions | 1840.最高建筑高度 | 2026-06-20

[1problem1day]

This issue was automatically added to the project.
🕒 Time (Beijing, UTC+8): 2026/6/20 01:51:45
🤖 Triggered by 1problem1day Bot according to action file

[LetMeFly666]

hello #1647 you are not alone now(/again). -- From MacOS

[1problem1day]

Set the project status to In Progress based on the solving label.
🕒 Time (Beijing, UTC+8): 2026/6/20 10:09:18
🤖 Triggered by 1problem1day Bot according to action file