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956 contest(s) 4,745 accounts(s)

Country distribution

N Country Participants
number
1
Japan 		172

Most top

N Handle T1 T2 T3 T10
1
Min_25 		48 22 18 73
2
hos-lyric 		44 32 33 98
3
uwi 		42 41 27 139
4
rng_58 		20 3 2 1
5
semiexp 		17 12 16 40
6
hirose 		6 5 11 32
7
hitoare 		4 7 6 45
8
hidesugar 		3 · 1 26
9
LayCurse 		2 4 2 14
10
jun0 		1 1 1 3
more

Most participations

N Handle Contests
count
1
uwi 		592
2
utomaya 		574
3
haruya 		434
4
hos-lyric 		262
5
rokusuke 		260
6
inamori 		246
7
Min_25 		220
8
hitoare 		202
9
triceps 		164
10
maikaze 		148
more

Most recent activity

N Handle Last
activity
1
semiexp 		today
2
rokusuke 		July 13, 2025
3
haruya 		July 13, 2025
4
hos-lyric 		July 13, 2025
5
hitoare 		July 13, 2025
6
tko919 		July 13, 2025
7
uwi 		July 6, 2025
8
Kude 		July 6, 2025
9
Hemimor 		July 6, 2025
10
shobonvip 		July 6, 2025
more

Problems

Date Name
today 955
July 13, 2025 Heptaphobia
July 6, 2025 Factorisation Nim
June 29, 2025 952
June 21, 2025 951
June 14, 2025 Pirate Treasure
June 7, 2025 Left vs Right
June 7, 2025 Left vs Right II
May 31, 2025 Fibonacci Residues
May 25, 2025 Continued Fraction Fraction
more

Past contests

End Time Contest
today Problem 955
July 13, 2025 Problem 954. Heptaphobia
July 6, 2025 Problem 953. Factorisation Nim
June 29, 2025 Problem 952. Order Modulo Factorial
June 21, 2025 Problem 951. A Game of Chance
June 14, 2025 Problem 950. Pirate Treasure
June 7, 2025 Problem 949. Left vs Right II
June 7, 2025 Problem 948. Left vs Right
May 31, 2025 Problem 947. Fibonacci Residues
May 25, 2025 Problem 946. Continued Fraction Fraction
more

Coming contests

Start Time Contest
July 26, 2025 Problem 956
Aug. 2, 2025 Problem 957