Problems from ACM-ICPC World Finals 2019

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Azulejos	3139	654	21%	0.23	623	426	68%	4.8
Beautiful Bridges	704	130	18%	0.23	127	99	78%	5.6
Checks Post Facto	172	44	26%	0.00	37	25	68%	4.5
Circular DNA	951	339	36%	0.03	299	259	87%	3.2
Dead-End Detector	1339	385	29%	0.10	312	267	86%	3.6
Directing Rainfall	558	65	12%	1.12	52	33	63%	6.2
First of Her Name	1484	348	23%	0.16	220	187	85%	4.9
Hobson's Trains	807	235	29%	0.09	185	158	85%	3.9
Karel the Robot	435	115	26%	0.17	54	47	87%	5.5
Miniature Golf	724	135	19%	0.79	136	92	68%	7.5
Traffic Blights	190	46	24%	0.03	46	39	85%	5.4