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Hot problems
CCC '23 J3 - Special Event
CCC '24 S2 - Heavy-Light Composition
Problem
Category
Points
AC %
Users ▾
NOIP '99 P2 - Palindrome Numbers
China NOI
7p
14.1%
25
Yet Another Contest 6 P5 - No More Coyotes
YAC
15p
22.5%
25
CEOI '22 P3 - Prize
CEOI
25p
6.5%
25
IOI '22 P2 - Prisoner Challenge
IOI
25p
8.2%
25
Baltic OI '01 P1 - Postman
Baltic OI
10p
18.7%
25
IOI '22 P4 - Digital Circuit
IOI
25p
25.2%
25
Cheerio Contest 2 P2 - Cereal Boxes
Uncategorized
3
13.0%
25
NOIP '08 P2 - Expression by Matches
China NOI
10p
52.5%
25
Wesley's Anger Contest Reject 1 - Stupendous Bowties 2
WAC
17
15.5%
25
COCI '23 Contest 1 #4 Kocke
COCI
15p
23.6%
25
ECOO '13 R1 P4 - Coupon Day
ECOO
10p
34.7%
24
DMOPC '14 Contest 4 P5 - Aircraft Carrier Akagi
DMOPC
20p
40.1%
24
Facebook Hacker Cup '15 Round 3 P1 - Boomerang
FHC
12p
25.7%
24
ICPC NAQ 2016 K - Robotopia
ICPC
5
18.4%
24
DMOPC '16 Contest 2 P5 - Tormented in Tartarus
DMOPC
15p
8.4%
24
COCI '08 Contest 1 #4 Jez
COCI
20p
23.8%
24
IOI '12 P2 - Parachute Rings
IOI
25p
15.3%
24
COCI '08 Regional #4 Tablica
COCI
15
34.1%
24
DWITE '10 R3 #1 - Integers along a line
DWITE
5
21.7%
24
DWITE '07 R3 #4 - The Convex Fence Company
DWITE
10
21.5%
24
Triway Cup '18 Summer H - Heavy Souls
Seasonal
15
29.6%
24
COCI '13 Contest 2 #5 Paleta
COCI
15p
11.0%
24
COCI '18 Contest 5 #5 Transport
COCI
25p
24.8%
24
COCI '06 Regional #4 Circle
COCI
15
36.7%
24
APIO '14 P3 - Beads and Wires
APIO
25p
24.1%
24
Baltic OI '06 P2 - Coin Collector
Baltic OI
12
19.0%
24
NOI '00 P5 - Frogs Crossing the River
China NOI
10p
29.7%
24
Good Code
Uncategorized
15
12.3%
24
NOI '07 P2 - Cash Exchange
China NOI
30p
12.1%
24
NOI '06 P1 - Network Charges
China NOI
20p
25.8%
24
NOI '11 P3 - Ali's Typewriter
China NOI
30p
29.9%
24
COCI '09 Contest 4 #6 Palacinke
COCI
15
41.2%
24
WC '01 P1 - The Rock
Woburn Challenge
7
77.2%
24
COCI '20 Contest 2 #3 Euklid
COCI
17p
19.6%
24
COCI '10 Contest 2 #3 Igra
COCI
7p
21.0%
24
COCI '16 Contest 2 #6 Burza
COCI
30p
22.0%
24
COCI '13 Contest 3 #2 Okvir
COCI
5p
61.4%
24
COCI '12 Contest 2 #3 Lanci
COCI
7p
35.3%
24
DMOPC '20 Contest 6 P5 - Jennifer's Math Mystery
DMOPC
17p
11.8%
24
COCI '11 Contest 6 #2 Prozori
COCI
5
65.8%
24
DMOPC '20 Contest 4 P6 - Petty Children
DMOPC
25p
20.8%
24
Monkey Bread
Uncategorized
7
27.3%
24
NOI '15 P4 - Homeric Epics
China NOI
25p
25.8%
24
Persuasion
Uncategorized
12
29.7%
24
Fixing Shirts
Uncategorized
15
18.4%
24
Expected Inversions
Uncategorized
12p
33.1%
24
DMOPC '21 Contest 5 P5 - Permutations & Primes
DMOPC
30p
10.9%
24
COCI '21 Contest 4 #5 Šarenlist
COCI
17p
30.0%
24
COI '12 #4 Spijuni
COCI
10p
30.4%
24
Yet Another Contest 4 P6 - No More Solitaire
YAC
20p
6.7%
24
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