Problems from ACM-ICPC World Finals 2019

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Azulejos	3223	737	23%	0.23	576	446	77%	5.0
Beautiful Bridges	739	163	22%	0.23	149	116	78%	5.2
Checks Post Facto	121	41	34%	0.00	30	23	77%	4.5
Circular DNA	1242	432	35%	0.03	345	304	88%	3.3
Dead-End Detector	1417	419	30%	0.10	330	289	88%	3.7
Directing Rainfall	560	82	15%	1.10	60	41	68%	6.7
First of Her Name	1738	392	23%	0.16	262	209	80%	5.2
Hobson's Trains	784	264	34%	0.09	207	177	86%	4.2
Karel the Robot	372	113	30%	0.11	69	52	75%	5.2
Miniature Golf	749	138	18%	0.79	165	105	64%	7.9
Traffic Blights	242	60	25%	0.03	68	51	75%	4.7