Problems from LTH Challenge 2021

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Bluetooth	0.00	93	985	851	86%	1.4 - 2.0Easy	da en sv
Bridge building	0.29	5452	33	8	24%	3.6 - 8.7Hard	da en
Distracted	0.01	215	384	162	42%	1.6 - 7.2Hard	da en
Julmust	0.00	61	646	543	84%	2.1 - 2.2Easy	da en
Keylogger	0.00	331	966	773	80%	1.3 - 2.4Easy	da en
Ortest Path	0.01	2270	66	19	29%	2.7 - 8.8Hard	da en
Roller Coaster Assembly	0.04	909	65	25	38%	5.2 - 7.9Hard	da en
SMIL	0.00	29	4392	3969	90%	1.3 - 1.6Easy	da en sv