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Random
Hot problems
COCI '08 Contest 3 #6 Najkraci
APIO '10 P1 - Commando
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CCC '24 S2 - Heavy-Light Composition
Yet Another Contest 8 P2 - No More Modern Art
2spooky4me
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Problem
Category
Points
AC %
Users ▴
Singularity Cup P6 - Explosive Breakout
Uncategorized
30p
19.7%
15
CCO Preparation Test 7 P2 - XOR Path
Mock CCO
20p
13.5%
16
DMPG '16 G2 - Kabane Apocalypse
DMOPC
20p
26.5%
16
IOI '97 P1 - Mars Explorer
IOI
20p
12.8%
16
ICPC ECNA 2005 C - The Game of Efil
ICPC
12
51.4%
16
ECOO '15 R2 P4 - Rectangle Roundup
ECOO
12p
33.3%
16
ECOO '14 R2 P3 - EasySweeper
ECOO
10p
42.3%
16
COCI '08 Contest 3 #4 Matrica
COCI
20p
10.3%
16
IOI '17 P5 - Simurgh
IOI
40p
12.1%
16
DWITE '08 R5 #3 - Working Directory
DWITE
7
45.9%
16
DWITE '10 R1 #4 - Planting Trees
DWITE
7
50.0%
16
DWITE '11 R4 #1 - Crossword Count
DWITE
5
54.8%
16
TLE '17 Contest 6 P4 - Willson and Travelling
TLE
15p
10.7%
16
TLE '17 Contest 6 P6 - 6 Friends
TLE
15p
31.9%
16
IOI '11 P6 - Parrots
IOI
20p
3.6%
16
COCI '17 Contest 2 #5 Usmjeri
COCI
17
21.6%
16
CEOI '17 P3 - Mousetrap
CEOI
25p
14.4%
16
CCO '99 P1 - You Can't Get There From Here
CCO
7
26.5%
16
Mock CCO '19 Contest 1 Problem 6 - A Geometry Problem
Mock CCO
15p
27.2%
16
CCO '02 P3 - Return To Blind Man's Bluff
CCO
12
12.2%
16
Back To School '19: FFT Fun
Seasonal
20p
14.6%
16
DMOPC '19 Contest 4 P6 - little_prince's Specialty Tea House
DMOPC
25p
5.8%
16
GlobeX Cup '19 S5 - Alien Navigation
Uncategorized
20p
7.4%
16
JSB '19 - P2
CTF
7
26.7%
16
DMOPC '19 Contest 4 P4 - Math Class
DMOPC
15p
3.4%
16
PIB '20 P7 - Karnaugh Maps
Uncategorized
15p
8.5%
16
Grid 3
Uncategorized
20
38.5%
16
WC '18 Contest 1 S4 - Bad Influence
Woburn Challenge
15p
12.4%
16
NOI '11 P5 - NOI Carnival
China NOI
25p
19.5%
16
IOI '99 P5 - Flatten
IOI
15p
21.8%
16
Kevin Needs Help
Uncategorized
20
29.4%
16
NOI '19 P5 - Landlords
China NOI
25p
22.6%
16
WC '01 P5 - The Man With The Golden Eye
Woburn Challenge
12
16.1%
16
WC '02 Suicidal P1 - Dark Lord
Woburn Challenge
12
12.7%
16
Baltic OI '20 P3 - Joker
Baltic OI
25p
14.9%
16
What a Niche
Uncategorized
10p
13.3%
16
COI '09 #2 Kolo
COCI
20p
17.7%
16
ICPC SWERC 2017 J - Frosting on the Cake
ICPC
7
41.7%
16
World Tour Contest Problem 1 — Solar Eclipse
Seasonal
5
1.6%
16
COCI '10 Contest 4 #4 Prosjek
COCI
7p
19.8%
16
COCI '13 Contest 3 #5 Parovi
COCI
12p
46.7%
16
COCI '17 Contest 3 #4 Portal
COCI
12p
53.4%
16
COCI '12 Contest 6 #4 Burek
COCI
12p
27.7%
16
COCI '17 Contest 5 #4 Karte
COCI
15p
46.8%
16
ICPC NWERC 2011 A - Binomial Coefficients
ICPC
10
24.7%
16
Dynamic Sum
Uncategorized
15
14.6%
16
String Finding - Hacking
Uncategorized
10
6.1%
16
COCI '21 Contest 2 #3 Hiperkocka
COCI
20p
23.3%
16
DMOPC '21 Contest 8 P6 - Castle Building
DMOPC
40p
8.9%
16
Baltic OI '14 P5 - Portals
Baltic OI
15p
23.4%
16
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