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
...
90
91
92
93
94
95
...
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
CCC '24 S2 - Heavy-Light Composition
DWITE '07 R3 #1 - Yet Another Primes Question
DWITE '07 R2 #1 - Not Quite Prime
CCC '16 S4 - Combining Riceballs
CCC '24 S4 - Painting Roads
COI '06 #1 Patrik
CCC '24 J3 - Bronze Count
Problem
Category
Types
Points
AC %
Users
Valentine's Day '19 S2 - Ctudor's Cute Cacti
Uncategorized
Implementation
7p
19.3%
155
Valentine's Day '19 S3 - Mathematical English
Uncategorized
Implementation
12p
8.0%
40
Valentine's Day '19 S4 - A Greedy Spouse
Uncategorized
Greedy Algorithms
15p
11.1%
32
Valentine's Day '19 S5 - A Top Tree Problem
Uncategorized
Data Structures
,
Graph Theory
25p
9.6%
11
Vending Machine
Uncategorized
Dynamic Programming
10p
41.7%
76
Virtuoso
Uncategorized
Uncategorized
15
21.5%
41
VMSS '15 #0 - Head Data Slave Applications
VM7WC
Advanced Math
10
26.7%
47
VMSS '15 #1 - Senpai, Help Me
VM7WC
Simple Math
5
27.4%
231
VMSS '15 #2 - Tomb Robbing
VM7WC
Graph Theory
7
50.0%
423
VMSS '15 #3 - Jeffrey and Roads
VM7WC
Geometry
7
25.6%
87
VMSS '15 #4 - Frank and Roads
VM7WC
Graph Theory
10
36.0%
468
VMSS '15 #5 - Jeffrey and Frank and a Lack of Roads
VM7WC
Dynamic Programming
12
26.6%
69
VM7WC '15 #1 Bronze - Goon
VM7WC
Implementation
3
38.8%
548
VM7WC '15 #1 Silver - Jung Goon
VM7WC
Implementation
5
45.1%
216
VM7WC '15 #1 Gold - JHK
VM7WC
Intermediate Math
10
28.9%
130
VM7WC '15 #2 Bronze - Recruits!
VM7WC
Implementation
3
28.4%
361
VM7WC '15 #2 Silver - 4 Nations, 1 Secret
VM7WC
String Algorithms
10
22.1%
205
VM7WC '15 #2 Gold - Uniting the Earth Empire
VM7WC
Data Structures
12
20.8%
322
VM7WC '15 #3 Bronze - M's Theorem!
VM7WC
Intermediate Math
5
21.4%
71
VM7WC '15 #3 Silver - Test Scores
VM7WC
Data Structures
5
31.0%
378
VM7WC '15 #3 Gold - Pollos
VM7WC
Dynamic Programming
12
15.9%
49
VM7WC '15 #4 Bronze - Melanie's Cradles
VM7WC
Implementation
3
41.2%
141
VM7WC '15 #4 Gold - Chain Rule
VM7WC
Graph Theory
10
36.5%
389
VM7WC '15 #5 Bronze - Melanioana
VM7WC
Implementation
3
29.1%
118
VM7WC '15 #5 Gold - Tree Planting
VM7WC
Data Structures
12
23.8%
234
VM7WC '15 #6 Gold - Agriphilosophical Data Slaves
VM7WC
Graph Theory
7
27.4%
173
VM7WC '16 #1 Bronze - A New Prime Factorization
VM7WC
Simple Math
5
32.2%
394
VM7WC '16 #1 Silver - Project Feng: Multiple Statements
VM7WC
Simple Math
5
18.2%
101
VM7WC '16 #1 Gold - Russian Palindrome Cultivation
VM7WC
String Algorithms
10
10.4%
57
VM7WC '16 #2 Bronze - G
VM7WC
String Algorithms
5
66.4%
259
VM7WC '16 #2 Silver - GG
VM7WC
Data Structures
5
28.4%
461
VM7WC '16 #2 Gold - GGG
VM7WC
Dynamic Programming
15
18.2%
315
VM7WC '16 #3 Bronze - Shahir-in-a-Box
VM7WC
Implementation
3
45.2%
176
VM7WC '16 #3 Silver - Can Shahir even get there?!
VM7WC
Graph Theory
5
37.9%
1459
VM7WC '16 #3 Gold - Hello, Officer.
VM7WC
Graph Theory
10
42.0%
467
VM7WC '16 #4 Bronze - Perfect Squares for Not-So-Perfect Cases
VM7WC
Implementation
3
22.8%
294
VM7WC '16 #4 Silver - Tests or Test Cases?
VM7WC
Recursion
5
37.0%
315
VM7WC '16 #4 Gold - Restoring Reputation
VM7WC
Dynamic Programming
10
36.0%
340
VM7WC '16 #5 Bronze - Jayden Watches Videos
VM7WC
Simple Math
3
57.7%
230
VM7WC '16 #5 Silver - Jayden Plays Video Games
VM7WC
Ad Hoc
,
Recursion
15
16.5%
39
VM7WC '16 #5 Gold - Jayden Studies Trees
VM7WC
Graph Theory
,
Recursion
7
35.4%
517
VM7WC '16 #5 Silver - Jayden Eats Chocolate
VM7WC
Dynamic Programming
7
30.2%
515
VM7WC '16 #6 Bronze - The Most Important Skill in Biology
VM7WC
Implementation
,
Simple Math
3
32.3%
256
VM7WC '16 #6 Silver - Diana Socializes
VM7WC
Recursion
7
17.1%
59
VM7WC '16 #6 Gold - Cold War Telecom
VM7WC
Graph Theory
10
23.7%
141
VPEX P0 - Pizza
Uncategorized
Simple Math
3p
40.2%
829
VPEX P1 - War on Two Fronts
Uncategorized
Implementation
3p
45.3%
358
VPEX P2 - Darcy Parties
Uncategorized
Simple Math
3p
62.3%
331
VPEX P3 - Coding Club
Uncategorized
Geometry
,
Simple Math
12p
4.7%
25
VPEX P4 - Etopika
Uncategorized
Dynamic Programming
,
Graph Theory
12p
19.3%
141
«
1
2
...
90
91
92
93
94
95
...
100
101
»