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
...
62
63
64
65
66
67
...
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
Problem types
Ad Hoc
Advanced Math
Brute Force
Capture the Flag
Constructive
Data Structures
Divide and Conquer
Dynamic Programming
Game Theory
Geometry
Graph Theory
Greedy Algorithms
Implementation
Interactive
Intermediate Math
Recursion
Regular Expressions
Simple Math
Simulation
String Algorithms
Uncategorized
Point range
Go
Random
Hot problems
Arcadia Computing Contest 1 P2 - Chemistry
Arcadia Computing Contest 1 P3 - ScanTron
Singularity Cup P2 - Reverse Substring Partitioning
Segment Tree Practice 1
Arcadia Computing Contest 1 P5 - Hacking Grades
Arcadia Computing Contest 1 P4 - Cyclic Sorting
CCC '13 S1 - From 1987 to 2013
Problem
Category
Types
Points
AC %
Users
IOI '12 P3 - Crayfish Scrivener
IOI
Data Structures
15p
31.1%
85
IOI '12 P3 - Crayfish Scrivener (Standard I/O)
IOI
Data Structures
15p
16.6%
277
IOI '12 P4 - Ideal City
IOI
Graph Theory
25p
23.6%
12
IOI '12 P4 - Ideal City (Standard I/O)
IOI
Graph Theory
25p
50.0%
7
IOI '12 P5 - Last Supper
IOI
Ad Hoc
,
Interactive
30p
21.7%
9
IOI '12 P6 - Jousting Tournament
IOI
Data Structures
17p
17.0%
21
IOI '12 P6 - Jousting Tournament (Standard I/O)
IOI
Data Structures
17p
19.8%
16
IOI '13 P1 - Dreaming
IOI
Graph Theory
15p
23.2%
239
IOI '13 P1 - Dreaming (Standard I/O)
IOI
Graph Theory
15p
18.5%
545
IOI '13 P2 - Art Class (Standard I/O)
IOI
Ad Hoc
20p
2.9%
93
IOI '13 P3 - Wombats
IOI
Data Structures
,
Graph Theory
40p
13.2%
38
IOI '13 P3 - Wombats (Standard I/O)
IOI
Data Structures
,
Graph Theory
40p
9.6%
60
IOI '13 P4 - Cave
IOI
Divide and Conquer
,
Interactive
10p
18.8%
330
IOI '13 P5 - Robots
IOI
Ad Hoc
20p
18.8%
98
IOI '13 P5 - Robots (Standard I/O)
IOI
Ad Hoc
20p
15.2%
283
IOI '13 P6 - Game
IOI
Data Structures
25p
9.0%
82
IOI '13 P6 - Game (Standard I/O)
IOI
Data Structures
,
Intermediate Math
17p
8.4%
151
IOI '14 P1 - Rail
IOI
Interactive
30p
11.1%
51
IOI '14 P2 - Wall
IOI
Data Structures
20p
25.0%
221
IOI '14 P2 - Wall (Standard I/O)
IOI
Data Structures
20p
16.1%
295
IOI '14 P3 - Game
IOI
Graph Theory
20p
28.0%
227
IOI '14 P4 - Gondola
IOI
Ad Hoc
15p
11.4%
107
IOI '14 P4 - Gondola (Standard I/O)
IOI
Ad Hoc
15
8.5%
224
IOI '14 P5 - Friend
IOI
Ad Hoc
30p
26.8%
107
IOI '14 P5 - Friend (Standard I/O)
IOI
Ad Hoc
30p
18.0%
199
IOI '14 P6 - Holiday
IOI
Ad Hoc
30p
15.8%
92
IOI '14 P6 - Holiday (Standard I/O)
IOI
Ad Hoc
30p
12.7%
144
IOI '14 Practice Task 1 - Square
IOI
Dynamic Programming
10p
49.1%
202
IOI '14 Practice Task 2 - Station
IOI
Greedy Algorithms
7p
51.6%
64
IOI '14 Practice Task 3 - Tile
IOI
Divide and Conquer
10p
28.3%
66
IOI '15 P1 - Boxes with Souvenirs
IOI
Ad Hoc
15p
13.8%
108
IOI '15 P1 - Boxes with Souvenirs (Standard I/O)
IOI
Ad Hoc
15p
8.4%
194
IOI '15 P2 - Scales
IOI
Ad Hoc
25p
6.8%
25
IOI '15 P3 - Teams
IOI
Ad Hoc
35p
8.8%
32
IOI '15 P3 - Teams (Standard I/O)
IOI
Ad Hoc
35p
3.6%
38
IOI '15 P4 - Horses
IOI
Ad Hoc
15p
11.5%
106
IOI '15 P4 - Horses (Standard I/O)
IOI
Ad Hoc
15p
7.6%
164
IOI '15 P5 - Sorting
IOI
Ad Hoc
25p
21.2%
71
IOI '15 P5 - Sorting (Standard I/O)
IOI
Ad Hoc
25p
18.6%
186
IOI '15 P6 - Towns
IOI
Ad Hoc
,
Graph Theory
40p
15.5%
60
IOI '16 P1 - Detecting Molecules
IOI
Greedy Algorithms
12p
11.9%
165
IOI '16 P1 - Detecting Molecules (Standard I/O)
IOI
Greedy Algorithms
12p
14.2%
241
IOI '16 P2 - Roller Coaster Railroad
IOI
Ad Hoc
,
Graph Theory
35p
43.2%
37
IOI '16 P2 - Roller Coaster Railroad (Standard I/O)
IOI
Ad Hoc
,
Graph Theory
35p
12.9%
27
IOI '16 P3 - Shortcut
IOI
Graph Theory
40p
8.8%
15
IOI '16 P3 - Shortcut (Standard I/O)
IOI
Graph Theory
40p
1.7%
7
IOI '16 P4 - Paint by Numbers
IOI
Ad Hoc
15p
12.5%
58
IOI '16 P4 - Paint by Numbers (Standard I/O)
IOI
Ad Hoc
15p
10.3%
66
IOI '16 P5 - Unscrambling a Messy Bug
IOI
Divide and Conquer
,
Interactive
20p
17.5%
68
IOI '16 P6 - Aliens
IOI
Dynamic Programming
30p
7.0%
85
«
1
2
...
62
63
64
65
66
67
...
100
101
»