atcoder.jp

Google calendar
auto updating
has account rating
has problem rating
has upsolving
1,156 contest(s) 311,318 accounts(s)

Top rating updated 22 hours ago

N Handle Rating
1
tourist
3798
2
ksun48
3724
3
w4yneb0t
3710
4
Benq
3658
5
zhoukangyang
3640
6
ecnerwala
3626
7
cospleermusora
3606
8
apiad
3599
9
Um_nik
3564
10
mnbvmar
3555
more

Rating distribution

Country distribution

N Country Participants
number
1
Japan
91783
2
India
72341
3
China
50759
4
Bangladesh
10902
5
Egypt
2773
6
South Korea
2703
7
Vietnam
2549
8
United States of America
2450
9
Taiwan
2147
10
Russia
2069
more

Country rating updated 1 week ago

N Country Participants
rating
1
China
3930
2
Japan
3823
3
United States of America
3748
4
Belarus
3670
5
Canada
3634
6
Poland
3502
7
Ukraine
3493
8
South Korea
3411
9
Russia
3395
10
Switzerland
3221
more

Most participated

N Handle Contests
number
1
kzyKT
688
2
ei13333
670
3
startcpp
668
4
kmjp
635
5
m_buyoh
622
6
merom686
610
7
satanic0258
609
8
tokumini
600
9
kotatsugame
594
10
uwi
577
more

Last activity

N Handle Last
activity
1
dn6049949
July 21, 2024
2
420801
July 21, 2024
3
slonichobot
July 21, 2024
4
toam
July 21, 2024
5
nishigake
July 21, 2024
6
yuto1115
July 21, 2024
7
saharan
July 21, 2024
8
merudo
July 21, 2024
9
yosupo
July 21, 2024
10
hitonanode
July 21, 2024
more

Rating activity

N Handle Rating
activity
1
Flying_hq
July 20, 2024
2
songziyu
July 20, 2024
3
ANKITKUMAR198
July 20, 2024
4
zhenjianuo2025
July 20, 2024
5
xiemy39
July 20, 2024
6
KaiKu
July 20, 2024
7
ksksjd
July 20, 2024
8
nuno
July 20, 2024
9
Hn3
July 20, 2024
10
Ksansansan
July 20, 2024
more

Most writer

N Handle Writer
number
1
maroonrk
27
2
maspy
13
3
square1001
10
4
E869120
10
5
sugim48
10
6
PCTprobability
9
7
yosupo
8
8
sigma425
8
9
DEGwer
8
10
chinerist
8
more

Problems

Date Rating Name
July 21, 2024 Breed Improvement
July 20, 2024
0
Piling Up
July 20, 2024
21
Japanese Cursed Doll
July 20, 2024
647
Avoid K Palindrome 2
July 20, 2024
968
Palindromic Number
July 20, 2024
1279
Sinking Land
July 20, 2024
1861
Palindromic Expression
July 20, 2024
3165
Dynamic Scheduling
July 13, 2024
0
Buy a Pen
July 13, 2024
90
Right Triangle
more

Problem rating distribution

Running contests