hsin.hr/coci

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145 contests 13,711 accounts

Country distribution

N Country Participants
number
1
Vietnam 		1252
2
Italy 		778
3
Iran 		716
4
Romania 		569
5
China 		553
6
Croatia 		398
7
Georgia 		378
8
India 		378
9
Poland 		373
10
Belarus 		355
more

Most top

N Handle T1 T2 T3 T10
1
Bruce Merry 		30 3 3 15
2
natsugiri natsugiri 		12 4 4 15
3
Uwi Tenpen 		10 4 3 14
4
Daniel Weber 		8 2 · 2
5
Vytis Banaitis 		6 2 5 25
6
Eduard Kalinichenko 		6 1 3 13
7
Jaehyun Koo 		6 1 3 3
8
Balint Rozsa 		6 1 1 2
9
Anh Tuan Khuc 		6 · · ·
10
Federico Glaudo 		5 1 · 8
more

Most participations

N Handle Contests
count
1
Vytis Banaitis 		96
2
Bruce Merry 		58
3
natsugiri natsugiri 		53
4
Uwi Tenpen 		48
5
Oliver Tennisberg 		43
6
Giorgi Skhirtladze 		42
7
Eduard Kalinichenko 		38
8
Евгений Вихров 		36
9
Andres Alumets 		35
10
Saulius Kazokas 		34
more

Most recent activity

N Handle Last
activity
1
natsugiri natsugiri 		Nov. 22, 2025
2
Ernesto Teruel 		Nov. 22, 2025
3
Nam Tran 		Nov. 22, 2025
4
Nguyen Nguyen 		Nov. 22, 2025
5
Brian Zhang 		Nov. 22, 2025
6
Karim Essam 		Nov. 22, 2025
7
alexander nolastname 		Nov. 22, 2025
8
Sarah Bittan 		Nov. 22, 2025
9
mate rekhviashvili 		Nov. 22, 2025
10
Relja Aleksic 		Nov. 22, 2025
more

Most solved problems

N Handle Total
solved
1
Vytis Banaitis 		351
2
Bruce Merry 		266
3
natsugiri natsugiri 		197
4
Uwi Tenpen 		185
5
Eduard Kalinichenko 		164
6
Евгений Вихров 		118
7
Carlos Joa 		95
8
Nguyen Nguyen 		93
9
Giorgi Skhirtladze 		91
10
Federico Glaudo 		86
more

Most points

N Handle Total
points
1
Vytis Banaitis 		33844.00
2
Bruce Merry 		24565.00
3
Uwi Tenpen 		20764.00
4
natsugiri natsugiri 		19869.00
5
Eduard Kalinichenko 		17245.00
6
Евгений Вихров 		12594.00
7
Giorgi Skhirtladze 		10311.00
8
Andrei Heidelbacher 		9465.00
9
Francesco Milizia 		9338.00
10
Federico Glaudo 		9037.00
more

Past contests

End Time Contest
Nov. 22, 2025 CONTEST #2
Oct. 25, 2025 CONTEST #1
Feb. 15, 2025 CONTEST #5
Jan. 25, 2025 CONTEST #4
Dec. 7, 2024 CONTEST #3
Nov. 9, 2024 CONTEST #2
Oct. 5, 2024 CONTEST #1
April 28, 2024 CROATIAN OLYMPIAD IN INFORMATICS
March 16, 2024 CONTEST #5
Feb. 10, 2024 CONTEST #4
more

Coming contests

Start Time Contest
Dec. 13, 2025 CONTEST #3
Jan. 24, 2026 CONTEST #4
Feb. 21, 2026 CONTEST #5
March 21, 2026 CONTEST #6
May 10, 2026 CROATIAN OLYMPIAD IN INFORMATICS