Problems from Nordic Collegiate Programming Contest (NCPC) 2021

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Antenna Analysis	877	247	28%	0.02	276	186	67%	6.1
Breaking Bars	170	14	8%	0.01	29	7	24%	9.2
Customs Controls	468	124	26%	0.02	87	71	82%	6.0
Deceptive Directions	838	177	21%	0.03	214	135	63%	7.4
Eavesdropper Evasion	127	32	25%	0.29	24	9	38%	8.6
Fortune From Folly	141	61	43%	0.00	76	53	70%	7.1
Grazed Grains	735	337	46%	0.00	290	248	86%	3.5
Hiring Help	210	43	20%	0.12	54	33	61%	6.9
Intact Intervals	187	33	18%	0.32	39	25	64%	6.2
Joint Jog Jam	711	489	69%	0.00	450	426	95%	1.5
Knot Knowledge	1504	938	62%	0.00	905	857	95%	1.5
Locust Locus	1030	493	48%	0.00	487	433	89%	2.1
Marvelous Marathon	21	2	10%	1.00	6	2	33%	7.8