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
...
82
83
84
85
86
87
...
99
100
»
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
CCC '16 S4 - Combining Riceballs
Appleby Contest '19 P5 - Matrix Operation
Cheerio Contest 1 S2 - School Expansion
WC '96 P6 - Bases Multiplication
CCCHK '15 J4 - Where to build my house?
EGOI '23 P4 - Bikes vs Cars
DMOPC '23 Contest 1 P1 - Peak Grid
Problem
Category ▴
Points
AC %
Users
Graph Contest 3 P1 - Travelling Salesmen
Uncategorized
7
33.4%
298
Graph Contest 2 P3 - Trees
Uncategorized
7
33.5%
148
Graph Contest 3 P3 - Cable TV
Uncategorized
7
39.3%
188
Graph Contest 1 P1 - Counting Paths
Uncategorized
10
19.4%
95
Graph Contest 2 P2 - Directed Acyclic Graph
Uncategorized
10
17.4%
393
Graph Contest 3 P2 - Shortest Path
Uncategorized
10p
24.1%
287
Graph Contest 1 P3 - Counting Cycles
Uncategorized
10
16.0%
113
ACSL '09 Contest 1 Senior - Bridge
Uncategorized
10p
25.0%
15
ACSL '09 Contest 3 Senior - Pinochle
Uncategorized
10p
34.1%
3
ACSL '09 Practice P3 - Zeroes
Uncategorized
10
21.6%
126
ACSL '09 Practice P1 - Kansas
Uncategorized
7
14.7%
67
ACSL '09 Practice P5 - Fax
Uncategorized
12p
29.3%
18
ACSL '09 Practice P4 - Rank
Uncategorized
7
45.9%
853
ACSL '09 Practice P7 - Cube
Uncategorized
15
16.1%
27
ACSL '09 Practice P2 - Cars
Uncategorized
10p
19.1%
36
ACSL '09 Practice P6 - Expression
Uncategorized
10p
11.4%
29
SMAC 08/09 (Nov) #2 - Stock Market II
Uncategorized
10p
7.6%
19
SMAC 08/09 (Oct) #2 - Digging for Gold
Uncategorized
10
19.2%
53
SMAC 08/09 (Oct) #5 - Crossroads
Uncategorized
12p
25.1%
30
SMAC 08/09 (Nov) #3 - Factor Game
Uncategorized
15
23.9%
49
SMAC 08/09 (Nov) #5 - Intelligent Stats
Uncategorized
10p
40.7%
21
SMAC 08/09 (Oct) #4 - Daycare
Uncategorized
15p
4.5%
20
SMAC 08/09 (Nov) #1 - Befungulator
Uncategorized
10
23.8%
20
SMAC 08/09 (Oct) #3 - Jumpscotch
Uncategorized
12p
29.6%
241
SMAC 08/09 (Oct) #1 - Eliminanagram
Uncategorized
5
47.0%
115
SMAC 08/09 (Nov) #4 - Infinite Degrees
Uncategorized
12p
25.3%
18
King Graff's Tolls
Uncategorized
17p
27.6%
55
King Graff's Trip
Uncategorized
15p
8.2%
47
King Graff's Defense
Uncategorized
15p
8.5%
59
MMM '14 D - Kuuhaku Numbers
Uncategorized
25p
8.5%
9
MMM '14 G - Campfire Cooking
Uncategorized
40p
2.7%
3
MMM '14 H - Lift Control
Uncategorized
25p
71.8%
3
MMM '14 A - Distinct Prime Factors
Uncategorized
7
26.4%
226
MMM '14 B - Benergy Transfer
Uncategorized
10
40.5%
25
MMM '14 E - English Essay
Uncategorized
30p
1.5%
1
MMM '14 C - Pie Shop
Uncategorized
17p
16.3%
28
MMM '14 F - Electricity Grid
Uncategorized
25p
12.5%
4
Alawn's Problem
Uncategorized
7
42.0%
26
A Digit Problem
Uncategorized
12p
31.8%
59
Kevin Needs Help
Uncategorized
20
29.4%
16
And Password
Uncategorized
20p
16.4%
8
QCC P0 - Thermometer
Uncategorized
3
54.1%
165
Median Modulo
Uncategorized
15p
7.3%
7
Data Compression
Uncategorized
15p
0.0%
0
Checkerboard Cut
Uncategorized
25p
30.1%
5
Fast LCA (Hard)
Uncategorized
17
8.7%
7
Temple Construction
Uncategorized
20p
14.5%
4
Sum Maximization
Uncategorized
10p
22.8%
47
Casino Crisis
Uncategorized
12p
33.8%
56
Maximum Independent Subset
Uncategorized
15p
12.6%
10
«
1
2
...
82
83
84
85
86
87
...
99
100
»