Japan: Results

International Olympiad in Informatics – Statistics

Olympiads Countries Tasks Hall of Fame Search

Japan

Hall of Fame People Delegations Results Main

Year ▼	Contestant	Country	Tasks								Score		Rank		Award
Year ▼	Contestant	Country	Tasks								Abs.	Rel.	Abs.	Rel.	Award
2024	Shogo Amacho	Japan	100	66.72	59	3	100	82.0			410.72	68.45%	13/353	96.60%	Gold
	Katsuki Ota	Japan	100	87.17	48	3	100	64.0			402.17	67.03%	15/353	96.03%	Gold
	Yuya Hirasawa	Japan	100	49.61	41	3	100	65.5			359.11	59.85%	31/353	91.50%	Silver
	Ryotaro Hayashi	Japan	100	29.31	59	3	100	51.5			342.81	57.13%	46/353	87.25%	Silver
2023	Yuki Tanaka	Japan	100	100	77.5	0	100	80			457.5	76.25%	4/350	99.14%	Gold
	Shogo Amacho	Japan	83	85	77.5	31	100	35			411.5	68.58%	9/350	97.71%	Gold
	Daiki Kodama	Japan	83	70	77.5	31	65	34			360.5	60.08%	21/350	94.29%	Gold
	Hibiki Nishiwaki	Japan	83	60	77.5	5	65	54			344.5	57.42%	25/350	93.14%	Gold
2022	Daiki Kodama	Japan	100	90.0	41	100	93.68	55.00			479.68	79.95%	16/349	95.70%	Gold
	Yuto Watanabe	Japan	100	80.0	44	100	100.00	55.00			479.00	79.83%	17/349	95.42%	Gold
	Yui Tamura	Japan	3	100.0	100	100	99.89	55.00			457.89	76.31%	23/349	93.70%	Gold
	Yuki Tanaka	Japan	100	50.0	58	100	91.49	55.00			454.49	75.75%	24/349	93.41%	Gold
2021	Ryomei Sugai	Japan	100	67	100	100	62	46			475	79.17%	6/351	98.58%	Gold
	Daiki Kodama	Japan	38	37	30	100	100	71			376	62.67%	28/351	92.31%	Gold
	Yuto Watanabe	Japan	67	37	55	100	62	21			342	57.00%	41/351	88.60%	Silver
	Rintaro Matsuo	Japan	100	37	55	100	11	33			336	56.00%	47/351	86.89%	Silver
2020	Rintaro Matsuo	Japan	5	100	100	100	92.62	100.00			497.62	82.94%	22/343	93.88%	Gold
	Masataka Yoneda	Japan	60	100	67	77	92.62	100.00			496.62	82.77%	23/343	93.59%	Gold
	Hirotaka Yoneda	Japan	60	100	41	77	80.71	67.96			426.67	71.11%	44/343	87.46%	Silver
	Tomohito Hoshii	Japan	32	100	27	42	80.71	100.00			381.71	63.62%	62/343	82.22%	Silver
2019	Masataka Yoneda	Japan	100	40	72	51.89	100	57			420.89	70.15%	25/327	92.66%	Gold
	Koichi Namekata	Japan	100	40	72	90.46	52	57			411.46	68.58%	29/327	91.44%	Silver
	Yasutaka Hiraki	Japan	100	40	72	45.89	100	24			381.89	63.65%	43/327	87.16%	Silver
	Sora Todaka	Japan	100	40	50	53.33	100	24			367.33	61.22%	52/327	84.40%	Silver
2018	Wataru Inoue	Japan	100	17	100	100	51	60			428	71.33%	6/335	98.51%	Gold
	Hiroaki Hosokawa	Japan	100	17	49	53	12	60			291	48.50%	67/335	80.30%	Silver
	Ikumi Shimizu	Japan	88	17	49	39	11	60			264	44.00%	91/335	73.13%	Bronze
	Koichi Namekata	Japan	30	37	49	63	18	36			233	38.83%	121/335	64.18%	Bronze
	Masataka Yoneda	Japan 2	97	37	49	53	90	36			362	60.33%			Gold^*
	Hirotaka Yoneda	Japan 2	100	31	49	86	18	36			320	53.33%			Silver^*
	Yasutaka Hiraki	Japan 2	100	37	49	49	51	19			305	50.83%			Silver^*
	Riku Kishida	Japan 2	97	37	15	53	12	45			259	43.17%			Bronze^*
2017	Yuta Takaya	Japan	89.52	100	100	100.00	100	100			589.52	98.25%	1/304	100.00%	Gold
	Riku Kawasaki	Japan	79.66	100	16	100.00	100	50			445.66	74.28%	4/304	99.01%	Gold
	Satoru Kawaharai	Japan	80.88	100	16	97.68	51	100			445.56	74.26%	5/304	98.68%	Gold
	Keiya Sakabe	Japan	69.09	13	16	100.00	30	50			278.09	46.35%	57/304	81.58%	Silver
2016	Takuya Inoue	Japan	100	34	97	100	100	60			491	81.83%	5/308	98.70%	Gold
	Yuta Takaya	Japan	100	34	38	100	100	60			432	72.00%	15/308	95.45%	Gold
	Riku Kawasaki	Japan	100	34	0	80	100	60			374	62.33%	44/308	86.04%	Silver
	Takahiro Masuda	Japan	100	34	9	100	100	25			368	61.33%	50/308	84.09%	Silver
2015	Yuta Takaya	Japan	100	71.42	34	100	100	100			505.42	84.24%	10/322	97.20%	Gold
	Takahiro Masuda	Japan	100	45.45	100	100	100	25			470.45	78.41%	16/322	95.34%	Gold
	Takuya Inoue	Japan	100	71.42	34	100	74	61			440.42	73.40%	27/322	91.93%	Gold
	Akio Matsuzaki	Japan	25	55.55	34	100	100	0			314.55	52.42%	88/322	72.98%	Bronze
2014	Yuta Takaya	Japan	56	100	100	100	69	47			472	78.67%	16/311	95.18%	Gold
	Hirotaka Isa	Japan	30	100	100	100	46	47			423	70.50%	40/311	87.46%	Silver
	Ken Ogura	Japan	56	100	42	100	69	47			414	69.00%	46/311	85.53%	Silver
	Ryoma Sato	Japan	30	8	42	75	46	30			231	38.50%	142/311	54.66%	Bronze
2013	Tsuyoki Kumazaki	Japan	100	93	55	100	90	63			501	83.50%	16/299	94.98%	Gold
	Soh Kumabe	Japan	100	84	37	100	53	63			437	72.83%	39/299	87.29%	Silver
	Kohji Liu	Japan	100	62	55	46	100	37			400	66.67%	60/299	80.27%	Silver
	Yo Mitani	Japan	0	0	0	100	28	37			165	27.50%	183/299	39.13%
2012	Shogo Murai	Japan	96	55	100	55	100	100			506	84.33%	4/310	99.03%	Gold
	Kazumi Kasaura	Japan	65	55	100	55	33	49			357	59.50%	29/310	90.97%	Silver
	Kohji Liu	Japan	40	20	60	55	40	100			315	52.50%	38/310	88.06%	Silver
	Ikumi Hide	Japan	40	55	60	55	0	100			310	51.67%	39/310	87.74%	Silver
2011	Shogo Murai	Japan	100	100	100	100	26	98			524	87.33%	14/303	95.71%	Gold
	Masaki Hara	Japan	100	21	100	100	50	100			471	78.50%	28/303	91.09%	Silver
	Shinya Shiroshita	Japan	100	43	100	100	26	89			458	76.33%	32/303	89.77%	Silver
	Kensuke Imanishi	Japan	69	43	100	89	26	85			412	68.67%	54/303	82.51%	Silver
2010	Shogo Murai	Japan	100	83	100	96	100	100	79	50	708	86.34%	9/297	97.31%	Gold
	Masaki Hara	Japan	100	87	100	81	100	100	75	50	693	84.51%	16/297	94.95%	Gold
	Kensuke Imanishi	Japan	100	78	60	89	100	100	79	50	656	80.00%	49/297	83.84%	Silver
	Hiroshi Yamashita	Japan	100	77	60	96	100	100	54	50	637	77.68%	60/297	80.13%	Silver
2009	Kazuhiro Hosaka	Japan	54	100	100	100	100	100	75	100	729	91.12%	2/301	99.67%	Gold
	Motoki Takigiku	Japan	28	100	100	100	100	100	40	75	643	80.38%	14/301	95.68%	Gold
	Makoto Soejima	Japan	5	100	100	100	100	100	0	85	590	73.75%	33/301	89.37%	Silver
	Yuichiro Hirano	Japan	21	99	100	100	100	21	12	15	468	58.50%	89/301	70.76%	Bronze
2008	Kazuhiro Hosaka	Japan	100	10	35	100	100	15			360	60.00%	23/283	92.23%	Gold
	Makoto Soejima	Japan	100	0	48	69	100	35			352	58.67%	25/283	91.52%	Silver
	Eiichi Matsumoto	Japan	78	–	0	68	55	–			201	33.50%	91/283	68.20%	Bronze
	Motoki Takigiku	Japan	100	–	30	–	26	10			166	27.67%	105/283	63.25%	Bronze
2007	Toshiki Kataoka	Japan	100	64	50	100	50	40			404	67.33%	19/285	93.68%	Gold
	Yuki Yoshida	Japan	100	0	16	100	50	20			286	47.67%	72/285	75.09%	Silver
	Eiichi Matsumoto	Japan	70	16	25	52	50	15			228	38.00%	117/285	59.30%	Bronze
	Ryosuke Okuta	Japan
2006	Toshiki Kataoka	Japan	100	100	81	100	0	32			413	68.83%	16/282	94.68%	Gold
	Masaki Watanabe	Japan	100	65	83	100	0	40			388	64.67%	21/282	92.91%	Gold
	Kentaro Imajo	Japan	100	59	54	0	8	20			241	40.17%	124/282	56.38%	Bronze
	Takuya Akiba	Japan
1996	Tsuyoshi Ito	Japan									85	42.50%	127/220	42.73%
1996	Yu Kobayashi	Japan									44	22.00%	185/220	16.36%
1995	Tetsushi Ito	Japan	30	40	20	30	18	32			170	85.00%	4/210	98.57%	Gold
1995	Teppei Kiuchi	Japan	21	28	14	30	0	4			97	48.50%	91/210	57.14%	Bronze
1994	Tetsushi Ito	Japan	30	24	30	30	5	15			134	67.00%	21/189	89.42%	Silver
1994	Kengo Matsuyama	Japan	30	30	0	6	10	20			96	48.00%	49/189	74.60%	Silver