Tasks

International Olympiad in Informatics – Statistics

Olympiads Countries Tasks Hall of Fame Search

Tasks

Year	No.		Name	Max. Score	Average Score		Full Solutions
Year	Day	Task	Name	Max. Score	Abs.	Rel.	Abs.	Rel. ▲
2023	2	6	Robot Contest	100	26.00	26.00%	0	0.00%
2019	2	4	Broken Line	100.00	41.05	41.05%	0	0.00%
2018	2	6	Meetings	100	21.71	21.71%	0	0.00%
2017	1	1	Nowruz	100.00	34.62	34.62%	0	0.00%
2010	1	2	Hotter Colder	100	55.23	55.23%	0	0.00%
	1	4	Languages	110	40.08	36.43%	0	0.00%
	2	7	Maze	110	42.75	38.86%	0	0.00%
2009	1	1	Archery	100	11.37	11.37%	0	0.00%
2008	2	6	Pyramid Base	100	9.82	9.82%	0	0.00%
2006	2	6	A Black Box Game	100	19.11	19.11%	0	0.00%
2003	1	3	Reverse	100.0	34.07	34.07%	0	0.00%
1997	1	2	Game of Hex	100	17.45	17.45%	0	0.00%
	1	3	Toxic iShongololo	100	37.81	37.81%	0	0.00%
	2	4	Character Recognition	100	14.26	14.26%	0	0.00%
	2	6	Stacking Containers	100	24.78	24.78%	0	0.00%
1991	2	2	S-terms Problem	100	26.51	26.51%	0	0.00%
2024	1	2	Message	100.00	36.84	36.84%	1	0.27%
2020	2	5	Counting Mushrooms	100.00	49.65	49.65%	1	0.29%
2018	1	2	Seats	100	14.33	14.33%	1	0.29%
2018	2	5	Highway Tolls	100	15.66	15.66%	1	0.29%
2016	1	3	Shortcut	100	18.35	18.35%	1	0.32%
2016	2	6	Aliens	100	17.86	17.86%	1	0.32%
2004	1	3	Polygon	100	11.29	11.29%	1	0.34%
2006	1	3	Forbidden Subgraph	100	26.15	26.15%	1	0.35%
2006	2	5	Joining Points	100	8.00	8.00%	1	0.35%
2008	1	2	Fish	100	3.02	3.02%	1	0.35%
2003	2	4	Guess Which Cow	100.0	54.78	54.78%	1	0.37%
1995	1	3	Printing	30	11.94	39.79%	1	0.48%
2024	2	4	Hieroglyphs	100	4.60	4.60%	2	0.55%
2023	2	4	Beech Tree	100	14.90	14.90%	2	0.56%
2019	2	6	Sky Walking	100	12.69	12.69%	2	0.60%
2012	1	1	Pebbling Odometer	100	29.52	29.52%	2	0.64%
2023	1	3	Soccer Stadium	100.0	23.38	23.38%	3	0.85%
2009	2	7	Regions	100	15.06	15.06%	3	0.97%
2013	1	3	Wombats	100	29.42	29.42%	3	0.99%
2007	2	6	Training	100	5.31	5.31%	3	1.04%
2016	1	2	Roller Coaster Railroad	100	25.53	25.53%	4	1.28%
2017	1	3	Toy Train	100	10.46	10.46%	4	1.29%
2017	2	5	Simurgh	100	18.46	18.46%	4	1.29%
2004	1	1	Artemis	100	39.08	39.08%	4	1.36%
2024	1	3	Tree	100	17.57	17.57%	5	1.37%
2003	1	2	Comparing Code	100	13.96	13.96%	4	1.49%
2022	2	6	Thousands Islands	100.00	28.64	28.64%	6	1.70%
2019	1	2	Split the Attractions	100	26.63	26.63%	6	1.81%
2012	2	4	Ideal City	100	31.39	31.39%	6	1.91%
2011	2	5	Elephants	100	26.54	26.54%	6	1.95%
2021	2	6	Bit Shift Registers	100	17.43	17.43%	7	1.97%
2013	2	6	Game	100	28.00	28.00%	6	1.99%
2010	2	8	Saveit	100	33.22	33.22%	6	1.99%
2015	2	6	Towns	100	13.42	13.42%	7	2.17%
2022	1	2	Prisoner Challenge	100.0	38.44	38.44%	8	2.27%
2022	1	3	Radio Towers	100	19.40	19.40%	8	2.27%
2011	2	6	Parrots	100	59.90	59.90%	7	2.28%
2024	2	6	Sphinx's Riddle	100.0	34.48	34.48%	9	2.46%
2022	2	5	Rarest Insects	100.00	35.04	35.04%	9	2.55%
2020	1	1	Comparing Plants	100	14.54	14.54%	9	2.59%
2003	2	5	Amazing Robots	100	12.28	12.28%	7	2.60%
1991	1	1	Square Problem	100	73.30	73.30%	2	2.70%
1997	2	5	Map Labelling	100	46.78	46.78%	6	2.71%
2015	1	2	Scales	100.00	37.51	37.51%	9	2.80%
2023	1	2	Longest Trip	100	34.44	34.44%	10	2.82%
2012	2	5	Last Supper	100	12.50	12.50%	9	2.87%
2003	2	6	Seeing the Boundary	100	18.47	18.47%	8	2.97%
2021	1	3	Fountain Parks	100	29.69	29.69%	11	3.10%
2023	1	1	Closing Time	100	22.95	22.95%	11	3.11%
2007	2	5	Pairs	100	42.26	42.26%	9	3.11%
2008	1	3	Islands	100	17.11	17.11%	9	3.18%
2014	2	6	Holiday	100	22.70	22.70%	11	3.54%
2007	1	3	Sails	100	19.73	19.73%	12	4.15%
2014	2	5	Friend	100	33.36	33.36%	13	4.18%
2021	2	5	Dungeons Game	100	30.46	30.46%	15	4.23%
2013	1	2	Art Class	100	32.48	32.48%	13	4.30%
2015	1	3	Teams	100	22.62	22.62%	14	4.35%
1995	2	6	Wires and Switches	40	15.92	39.81%	10	4.76%
2021	1	2	Keys	100	31.04	31.04%	17	4.79%
2017	2	6	Ancient Books	100	26.30	26.30%	15	4.82%
2018	1	3	Werewolf	100	30.60	30.60%	17	5.01%
2004	2	4	Empodia	100	43.93	43.93%	16	5.42%
2014	1	1	Rail	100	32.71	32.71%	17	5.47%
1995	2	5	Street Race	30	14.35	47.83%	12	5.71%
2021	1	1	Distributing Candies	100	20.92	20.92%	24	6.76%
2019	1	3	Rectangles	100	36.92	36.92%	23	6.95%
2012	1	2	Parachute Rings	100	18.47	18.47%	22	7.01%
2009	2	8	Salesman	100	22.42	22.42%	22	7.12%
2023	2	5	Overtaking	100	44.62	44.62%	28	7.91%
2007	1	2	Flood	100	20.65	20.65%	24	8.30%
2017	2	4	The Big Prize	100.00	54.44	54.44%	27	8.68%
2008	2	4	Teleporters	100	14.53	14.53%	25	8.83%
2011	1	2	Race	100	25.85	25.85%	29	9.45%
1995	1	2	Shopping Offers	40	15.09	37.71%	20	9.52%
2009	1	2	Hiring	100	28.86	28.86%	30	9.71%
2020	2	4	Packing Biscuits	100	22.85	22.85%	35	10.09%
2018	2	4	Mechanical Doll	100	31.54	31.54%	36	10.62%
1989	1	3	Boxes: Subproblem 3	50	19.70	39.39%	5	10.87%
2020	1	3	Carnival Tickets	100	29.60	29.60%	39	11.24%
2011	1	1	Tropical Garden	100	40.62	40.62%	36	11.73%
2012	2	6	Jousting Tournament	100	26.10	26.10%	38	12.10%
2022	1	1	Catfish Farm	100	33.77	33.77%	48	13.60%
2019	2	5	Vision Program	100	53.44	53.44%	47	14.20%
2017	1	2	Wiring	100	26.49	26.49%	45	14.47%
2022	2	4	Digital Circuit	100	25.32	25.32%	52	14.73%
1995	1	1	Packing Rectangles	30	13.51	45.05%	32	15.24%
2013	2	5	Robots	100	43.53	43.53%	47	15.56%
2004	1	2	Hermes	100	52.56	52.56%	47	15.93%
2006	1	2	Pyramid	100	45.93	45.93%	46	16.20%
2015	2	5	Sorting	100	47.07	47.07%	59	18.32%
2009	2	6	Mecho	100	46.09	46.09%	58	18.77%
1989	1	2	Boxes: Subproblem 2	40	22.28	55.71%	9	19.57%
2016	2	5	Unscrambling a Messy Bug	100	42.16	42.16%	62	19.87%
1997	1	1	Mars Explorer	100	61.09	61.09%	44	19.91%
2007	1	1	Aliens	100	45.92	45.92%	60	20.76%
2010	1	3	Quality of Living	100	51.30	51.30%	64	21.26%
2004	2	6	Farmer	100	56.00	56.00%	65	22.03%
1995	2	4	Letter Game	30	13.40	44.68%	47	22.38%
2014	1	3	Game	100	36.57	36.57%	71	22.83%
2024	2	5	Mosaic	100	59.26	59.26%	93	25.41%
2004	2	5	Phidias	100	53.54	53.54%	76	25.76%
2012	1	3	Crayfish Scrivener	100	51.70	51.70%	82	26.11%
2020	2	6	Stations	100.00	51.27	51.27%	91	26.22%
2014	1	2	Wall	100	39.76	39.76%	82	26.37%
2003	1	1	Trail Maintenance	100	48.25	48.25%	74	27.51%
2006	2	4	The Valley of Mexico	100	39.26	39.26%	79	27.82%
2008	2	5	Linear Garden	100	47.60	47.60%	82	28.98%
2016	2	4	Paint by Number	100	63.60	63.60%	91	29.17%
2015	1	1	Boxes with Souvenirs	100	44.32	44.32%	96	29.81%
2013	1	1	Dreaming	100	41.15	41.15%	94	31.13%
2024	1	1	Nile	100	68.09	68.09%	126	34.43%
2011	2	4	Crocodile	100	55.15	55.15%	108	35.18%
2015	2	4	Horses	100	50.57	50.57%	117	36.34%
2014	2	4	Gondola	100	64.26	64.26%	114	36.66%
2011	1	3	Ricehub	100	56.88	56.88%	113	36.81%
1989	1	1	Boxes: Subproblem 1	10	7.28	72.83%	18	39.13%
2008	1	1	Type Printer	100	53.78	53.78%	118	41.70%
2020	1	2	Connecting Supertrees	100	77.93	77.93%	152	43.80%
2013	2	4	Cave	100	64.39	64.39%	135	44.70%
2007	2	4	Miners	100	68.31	68.31%	131	45.33%
2016	1	1	Detecting Molecules	100	66.02	66.02%	159	50.96%
2019	1	1	Arranging Shoes	100	74.47	74.47%	171	51.66%
2018	1	1	Combo	100	74.12	74.12%	187	55.16%
2010	2	6	Traffic Congestion	100	75.91	75.91%	188	62.46%
2009	1	4	Raisins	100	70.55	70.55%	202	65.37%
2006	1	1	Deciphering the Mayan Writing	100	80.62	80.62%	203	71.48%
2009	1	3	Poi	100	90.05	90.05%	261	84.47%
2021	2	4	Mutating DNA	100	93.42	93.42%	304	85.63%
2009	2	5	Garage	100	91.55	91.55%	273	88.35%
2010	1	1	Cluedo	100	92.69	92.69%	269	89.37%
2010	2	5	Memory	100	93.19	93.19%	275	91.36%
2005	1	1	Garden	100	N/A
		2	Mountain	100	N/A
		3	Mean Sequence	100	N/A
	2	4	Birthday	100	N/A
		5	Rectangle Game	100	N/A
		6	Rivers	100	N/A
2002	1	1	The Troublesome Frog	100	N/A
		2	Utopia Divided	100	N/A
		3	XOR	100	N/A
	2	4	Batch Scheduling	100	N/A
		5	Bus Terminals	100	N/A
		6	Two Rods	100	N/A
2001	1	1	Mobile Phones	100	N/A
		2	Ioiwari Game	100	N/A
		3	Twofive	100	N/A
	2	4	Score	100	N/A
		5	Double Crypt	100	N/A
		6	Depot	100	N/A
2000	1	1	Palindrome	100	N/A
		2	Car Parking	100	N/A
		3	Median Strength	100	N/A
	2	4	Walls	100	N/A
		5	Post Office	100	N/A
		6	Building with Blocks	100	N/A
1999	1	1	Little Shop of Flowers	100	N/A
		2	Hidden Codes	100	N/A
		3	Underground City	100	N/A
	2	4	Traffic Lights	100	N/A
		5	Flatten	100	N/A
		6	A Strip of Land	100	N/A
1998	1	1	Contact	100	N/A
		2	Starry Night	150	N/A
		3	Party Lamps	100	N/A
	2	4	Picture	100	N/A
		5	Camelot	150	N/A
		6	Polygon	100	N/A
1996	1	1	A Game	N/A	N/A
		2	Job Processing	N/A	N/A
		3	Network of Schools	N/A	N/A
	2	4	Sorting a Three-Valued Sequence	N/A	N/A
		5	Longest Prefix	N/A	N/A
		6	Magic Squares	N/A	N/A
1994	1	1	The Triangle	30	N/A
		2	The Castle	30	N/A
		3	The Primes	40	N/A
	2	4	The Clocks	30	N/A
		5	The Buses	30	N/A
		6	The Circle	40	N/A
1993	1	1	Necklace	N/A	N/A
		2	Company	N/A	N/A
		3	Rectangles	N/A	N/A
	2	4	Canadian Airlines	100	N/A
1992	1	1	Islands in the Sea	100	N/A
1992	2	2	Climbing a Mountain	100	N/A
1990	1	1	Schedule	100	N/A
1990	2	2	Robots	100	N/A