Timeline for City Construction Solution times out for large input

12 events

when toggle format	what		by	license	comment
Dec 31, 2019 at 4:10	history	edited	Jamal		edited tags
Dec 25, 2019 at 22:19	history	edited	Anatolii		Add relevant tag
Dec 25, 2019 at 22:17	vote	accept	Anatolii
Dec 25, 2019 at 22:13	answer	added	Anatolii		timeline score: 4
Dec 24, 2019 at 21:26	history	edited	Anatolii	CC BY-SA 4.0	Fix compilation error in the app
Dec 24, 2019 at 8:42	history	edited	Anatolii	CC BY-SA 4.0	Improve the code and switch to Python 3
Dec 23, 2019 at 10:27	history	edited	Peilonrayz♦		edited tags
Dec 20, 2019 at 15:00	history	tweeted			twitter.com/StackCodeReview/status/1208039503060983811
Dec 20, 2019 at 10:11	history	edited	Anatolii		Add a better matching tag
Dec 20, 2019 at 9:32	history	edited	AlexV		edited tags
Dec 20, 2019 at 0:08	history	edited	Anatolii		Add relevant tags
Dec 20, 2019 at 0:03	history	asked	Anatolii	CC BY-SA 4.0