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Random
Hot problems
Educational DP Contest AtCoder C - Vacation
COCI '14 Contest 5 #3 Traktor
CCCHK '15 J3 - Queens can't attack me!
IOI '04 P4 - Phidias
CCC '10 J2 - Up and Down
IOI '14 Practice Task 1 - Square
COCI '07 Contest 4 #4 Muzicari
Problem
Category
Points
AC %
Users ▾
Wesley's Anger Contest 6 Problem 4 - Runway Lights
WAC
12p
14.0%
87
UCRPC F21 B - Lost in the Shuffle
ICPC
3
68.7%
87
BSSPC '22 P7 - Exec Team Applications
Uncategorized
10p
22.9%
87
COCI '22 Contest 5 #1 Kalendar
COCI
5p
44.3%
87
CCO '14 P5 - Early Exam Evacuation
CCO
20p
23.2%
86
GFSSOC '15 Fall S1 - T-Shirts
GFSSOC
5p
23.8%
86
Touching Segments
Uncategorized
20p
21.3%
86
VMSS '15 #3 - Jeffrey and Roads
VM7WC
7
25.2%
86
MWC '15 #7 P1: Sequences
MWC
3
17.7%
86
CEOI '18 P5 - Toys
CEOI
10p
30.8%
86
IOI '11 P4 - Crocodile's Underground City
IOI
17p
28.5%
86
CCO '03 P5 - Longest Substring
CCO
7p
15.8%
86
WC '99 P5 - Good Will Hunting
Woburn Challenge
5
16.8%
86
Appleby Contest '20 P4 - Philosophy Class
Uncategorized
12p
15.4%
86
Another Contest 6 Problem 15 - Boolean (Medium)
ACC
0p
16.1%
86
COCI '21 Contest 2 #2 Kutije
COCI
10p
44.2%
86
Yet Another Contest 1 P2 - A Boring Problem
YAC
10p
12.9%
86
CCC '23 S5 - The Filter
CCC
20p
16.3%
86
DMOPC '23 Contest 1 P3 - Colour Scheme
DMOPC
12p
10.8%
86
COCI '14 Contest 6 #1 Paprika
COCI
3p
54.8%
85
JOI '14 Open P2 - Fortune Telling 2
JOI
25p
22.9%
85
TSOC '15 Contest 2 #1 - The Code
TSOC
5
33.3%
85
DMOPC '15 Contest 6 P2 - Tilt
DMOPC
5p
6.9%
85
TSOC '16 Contest 2 #4 - Bob's Primes
TSOC
7
19.1%
85
DMPG '16 S2 - Pandemic
DMOPC
7p
14.1%
85
HCI '16 - Unexpected Factorial
Uncategorized
5p
28.8%
85
DWITE '11 R1 #4 - C001 Numbers
DWITE
3
28.1%
85
DMPG '18 G6 - Class Chitchat
DMOPC
20p
27.6%
85
DMOPC '18 Contest 1 P4 - Sorting
DMOPC
12p
14.1%
85
Baltic OI '13 P2 - Palindrome-Free Numbers
Baltic OI
15p
27.4%
85
WC '16 Contest 4 J1 - Anyone Can Be Anything
Woburn Challenge
5p
65.1%
85
COCI '10 Contest 7 #1 Šećer
COCI
3p
41.3%
85
CCO '21 P2 - Weird Numeral System
CCO
17p
12.2%
85
Bob Hates Triangles
Uncategorized
7
48.7%
85
UTS Open '15 #1 - Caesar Salad
Uncategorized
5p
37.2%
84
COCI '15 Contest 1 #2 Akcija
COCI
5
41.3%
84
DMOPC '17 Contest 3 P3 - N-Kat
DMOPC
10p
18.9%
84
DMOPC '18 Contest 1 P3 - Sorting
DMOPC
12p
21.4%
84
CCO '96 P3 - Quadtrees
CCO
15
48.4%
84
Baltic OI '13 P5 - Tracks in the Snow
Baltic OI
12p
29.6%
84
A Simple Game
Uncategorized
7p
30.6%
84
WC '18 Contest 3 J4 - Leveling Up
Woburn Challenge
7p
32.1%
84
DMOJ Capture The Flag '20 C2 - Small RSA
CTF
5
39.3%
84
COCI '20 Contest 4 #2 Vepar
COCI
10p
18.6%
84
COCI '22 Contest 2 #1 Tramvaji
COCI
5p
47.7%
84
COCI '22 Contest 3 #2 Dirigent
COCI
7p
28.2%
84
COCI '14 Contest 1 #3 Piramida
COCI
10p
11.7%
83
ECOO '14 R3 P2 - Mothers and Daughters
ECOO
7p
59.0%
83
DMOPC '17 Contest 2 P4 - Mimi and Dictionary
DMOPC
12p
21.6%
83
DMOPC '19 Contest 2 P4 - A Greedy Problem
DMOPC
15p
20.4%
83
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