Problems from LTH Challenge 2021

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Bluetooth	0.00	93	983	850	86%	1.4 - 2.0Easy	da en sv
Bridge building	0.29	5452	31	6	19%	3.7 - 9.0Hard	da en
Distracted	0.01	215	381	160	42%	1.6 - 7.2Hard	da en
Julmust	0.00	61	640	536	84%	2.1 - 2.2Easy	da en
Keylogger	0.00	331	953	761	80%	1.3 - 2.4Easy	da en
Ortest Path	0.01	2270	65	19	29%	2.8 - 8.8Hard	da en
Roller Coaster Assembly	0.04	909	58	23	40%	3.8 - 8.0Hard	da en
SMIL	0.00	29	4389	3963	90%	1.3 - 1.6Easy	da en sv