Home
Problems
Submissions
Users
Contests
About
>
Status
Tips
API
Github
Log in
or
Sign up
This site works best with JavaScript enabled.
Problems
«
1
2
...
78
79
80
81
82
83
...
100
101
»
Problem search
Full text search
Has editorial
Show problem types
Category
All
---
AAC
ACC
APIO
Balkan OI
Baltic OI
BlueBook
Brazil OI
Bubble Cup
Bulgarian OI
CCC
CCO
CEOI
China NOI
Classics
COCI
CSPC
CTF
Data Structure Tests
DMOPC
DWITE
ECOO
EGOI
ESOI
FHC
Fun Math
GFSSOC
Google Code Jam
Google Hash Code
Google Kick Start
ICPC
IOI
JOI
Mock CCC
Mock CCO
MWC
Olympiads School
POI
SAC Coding Challenge
Seasonal
SIUCF
Taiwan NOI
TLE
TSOC
Uncategorized
VM7WC
WAC
Waterloo Local
Woburn Challenge
YAC
Point range
Go
Random
Hot problems
Singularity Cup P2 - Reverse Substring Partitioning
CCC '20 S4 - Swapping Seats
Strict Evaluation
CCC '20 J4 - Cyclic Shifts
CCC '24 J3 - Bronze Count
CCC '13 S1 - From 1987 to 2013
Singularity Cup P1 - Maximum Permutation Product
Problem
Category
Points
AC %
Users
Bob's Shortest Non-common Substring
Olympiads School
20p
17.9%
11
Bob's Longest Common Path
Olympiads School
25p
6.3%
5
Bob's Kingdom
Olympiads School
12p
16.2%
28
The Subset
Olympiads School
20p
18.2%
10
Circular Knapsack Problem
Olympiads School
25p
8.6%
8
Maximum Deviation Spanning Tree
Olympiads School
25p
3.8%
4
Bob's Farm
Uncategorized
20p
31.7%
8
Least Multiple
Olympiads School
10p
8.0%
37
Three Subarrays
Olympiads School
20p
10.7%
6
Circular Swap
Olympiads School
25p
5.9%
5
The Extra Node
Olympiads School
17p
13.4%
15
Adjacent Pairs
Olympiads School
15p
10.4%
22
Weight Assignment
Olympiads School
25p
5.4%
5
Permutation Sorting
Olympiads School
20p
20.3%
19
Tree Journey
Olympiads School
12p
50.0%
34
Infinity Card Decks
Olympiads School
15p
15.1%
18
City Travel
Olympiads School
15p
17.8%
25
Three Colors
Olympiads School
12p
48.2%
38
Three Nodes
Olympiads School
17p
11.8%
18
0-1 Sequence
Olympiads School
15p
21.6%
5
Olympic Scoring
Uncategorized
3
13.4%
136
Longest Up-Down Subsequence
POI
12p
30.1%
131
A Fenwick Tree Question
Olympiads School
15
31.2%
64
Matchings
POI
30p
15.2%
3
Mailing Origami
Uncategorized
20
9.1%
67
Returning Home
Uncategorized
10
23.1%
80
One Small Favour
Uncategorized
10p
1.1%
17
Another Small Favour
Uncategorized
15p
5.3%
9
OTHS Coding Competition 1 (Mock CCC) J1 - Math Assistance
Uncategorized
3
64.5%
421
OTHS Coding Competition 1 (Mock CCC) J2 - Wand Selection
Uncategorized
3
57.0%
344
OTHS Coding Competition 1 (Mock CCC) J3 - Explosion
Uncategorized
5p
35.5%
256
OTHS Coding Competition 1 (Mock CCC) J4 - Railgun
Uncategorized
7p
23.5%
181
OTHS Coding Competition 1 (Mock CCC) J5 - Scavenger Hunt
Uncategorized
10p
20.6%
74
OTHS Coding Competition 2 P1 - Chess Pieces
Uncategorized
3
57.7%
314
OTHS Coding Competition 2 P2 - Ghoul Investigators
Uncategorized
3p
47.6%
254
OTHS Coding Competition 2 P3 - Tally Clicker
Uncategorized
5
39.1%
229
OTHS Coding Competition 2 P4 - Magic Barrier
Uncategorized
5p
36.4%
168
OTHS Coding Competition 2 P5 - Coffee Jelly
Uncategorized
7
38.8%
150
BlueBook - Cross Country
BlueBook
3
42.9%
1329
BlueBook - Cost
BlueBook
3
20.8%
730
BlueBook - Direction
BlueBook
3
39.7%
924
BlueBook - Pay
BlueBook
3
20.2%
398
BlueBook - Change
BlueBook
3
9.3%
211
BlueBook - Times Tables
BlueBook
3
54.6%
1530
BlueBook - Max is Last
BlueBook
3
41.2%
527
BlueBook - Interest
BlueBook
3
28.7%
597
BlueBook - World Pop
BlueBook
3
28.5%
508
BlueBook - Power Base
BlueBook
3
40.1%
573
BlueBook - Powers of 2
BlueBook
3
36.4%
703
BlueBook - Find the Character
BlueBook
3
39.2%
608
«
1
2
...
78
79
80
81
82
83
...
100
101
»