usaco.org

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59 contest(s) 22,883 accounts(s)

Country distribution

N Country Participants
number
1
United States of America 		9710
2
China 		4030
3
Vietnam 		827
4
Canada 		577
5
Iran 		543
6
Romania 		500
7
South Korea 		488
8
Russia 		384
9
Belarus 		383
10
India 		368
more

Last activity

N Handle Last
activity
1
Jay Leeds, USA 		March 25, 2022
2
Rain Jiang, USA 		March 25, 2022
3
Kevin Sun, CAN 		March 25, 2022
4
Andrew He, USA 		March 25, 2022
5
John Smith, USA 		March 25, 2022
6
Benjamin Chen, USA 		March 25, 2022
7
Mateusz Radecki, POL 		March 25, 2022
8
Darren Li, USA 		March 25, 2022
9
Jiangqi Dai, CHN 		March 25, 2022
10
Yahor Dubovik, BLR 		March 25, 2022
more

Most participated

N Handle Contests
number
1
Andrew He, USA 		41
2
Bruce Merry, ZAF 		34
3
Kevin Li, USA 		31
4
Seunghyun Joe, KOR 		30
5
Uwi Tenpen, JPN 		27
6
Andrew Chen, USA 		27
7
Kevin Liu, USA 		26
8
Daniel Wang, USA 		25
9
Eric Zhang, USA 		24
10
Andy Wang, USA 		23
more

Problems

Date Name
March 25, 2022 Apple Catching
March 25, 2022 262144 Revisited
March 25, 2022 Pair Programming
March 25, 2022 Hoof and Brain
March 25, 2022 Balancing a Tree
March 25, 2022 Up Down Subsequence
Feb. 25, 2022 Redistributing Gifts
Feb. 25, 2022 Paint by Rectangles
Feb. 25, 2022 Cow Camp
Feb. 25, 2022 Sleeping in Class
more

Past contests

End
Time
 Contest
March 29, 2022 US Open
March 1, 2022 Third Contest
Feb. 1, 2022 Second Contest
Dec. 21, 2021 First Contest
June 28, 2021 IOI 2021 in Singapore
April 6, 2021 US Open
March 2, 2021 Third Contest
Jan. 26, 2021 Second Contest
Dec. 22, 2020 First Contest
May 31, 2020 Training Camp
more

Coming contests

Start
Time
 Contest
May 26, 2022 Training Camp
Aug. 7, 2022 IOI 2022 in Indonesia