Problems from ACM-ICPC World Finals 2019

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Azulejos	1850	360	19%	0.23	461	298	65%	5.3
Beautiful Bridges	464	100	22%	0.23	86	72	84%	4.0
Checks Post Facto	82	29	35%	0.00	18	13	72%	4.9
Circular DNA	746	273	37%	0.03	232	202	87%	2.7
Dead-End Detector	620	203	33%	0.10	207	179	86%	3.4
Directing Rainfall	443	46	10%	1.12	32	19	59%	5.4
First of Her Name	1114	248	22%	0.16	162	141	87%	4.2
Hobson's Trains	406	141	35%	0.09	118	104	88%	3.9
Karel the Robot	319	79	25%	0.18	36	29	81%	5.6
Miniature Golf	543	96	18%	0.79	95	68	72%	6.5
Traffic Blights	156	32	21%	0.03	32	26	81%	6.7