Problems from ACM-ICPC World Finals 2019

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Azulejos	2890	580	20%	0.23	565	384	68%	4.4
Beautiful Bridges	645	117	18%	0.23	106	87	82%	5.0
Checks Post Facto	113	33	29%	0.00	26	16	62%	6.8
Circular DNA	882	306	35%	0.03	268	229	85%	3.1
Dead-End Detector	1203	343	29%	0.10	275	239	87%	3.4
Directing Rainfall	519	59	11%	1.12	45	28	62%	6.0
First of Her Name	1306	296	23%	0.16	192	163	85%	4.5
Hobson's Trains	747	213	29%	0.09	161	140	87%	3.4
Karel the Robot	383	100	26%	0.18	46	39	85%	4.4
Miniature Golf	620	109	18%	0.79	116	79	68%	7.2
Traffic Blights	168	37	22%	0.03	36	30	83%	6.2