Problems from ACM-ICPC World Finals 2019

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Azulejos	2628	582	22%	0.23	494	392	79%	4.4
Beautiful Bridges	626	128	20%	0.23	125	97	78%	5.1
Checks Post Facto	106	35	33%	0.00	23	18	78%	6.8
Circular DNA	1045	357	34%	0.03	301	263	87%	3.1
Dead-End Detector	1240	360	29%	0.10	284	252	89%	3.4
Directing Rainfall	524	76	15%	1.10	53	36	68%	6.0
First of Her Name	1489	330	22%	0.16	222	180	81%	4.5
Hobson's Trains	691	227	33%	0.09	172	152	88%	3.4
Karel the Robot	296	96	32%	0.18	54	43	80%	4.4
Miniature Golf	666	117	18%	0.79	140	88	63%	7.2
Traffic Blights	221	52	24%	0.03	59	43	73%	6.2