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
...
52
53
54
55
56
57
...
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 '24 S2 - Heavy-Light Composition
Max's Anger Contest Series 2 P3 - Array Anger
CCC '24 J4 - Troublesome Keys
Problem
Category ▴
Points
AC %
Users
GFSSOC '15 Fall S2 - Hearth
GFSSOC
5p
42.4%
353
GFSSOC '15 Fall S1 - T-Shirts
GFSSOC
5p
23.6%
87
GFSSOC '15 Fall S3 - System(0);
GFSSOC
10p
22.6%
89
GFSSOC '15 Fall Practice P1 - Bruno and Trig
GFSSOC
3p
37.8%
442
GFSSOC '15 Fall Practice P2 - Bruno and Tennis
GFSSOC
5p
29.2%
99
GFSSOC '15 Fall Practice P3 - Bruno and Beads
GFSSOC
5p
45.3%
133
GFSSOC '15 Fall Practice P4 - Bruno and Fibonacci
GFSSOC
5p
23.9%
235
GFSSOC '15 Fall Practice P5 - Bruno and Pumpkins
GFSSOC
7p
28.6%
178
GFSSOC '15 Winter S1 - OR-deal
GFSSOC
5p
31.4%
331
GFSSOC '15 Winter S2 - Soko-Boop
GFSSOC
12p
22.5%
63
GFSSOC '15 Winter S3 - PalinDrone
GFSSOC
7p
19.9%
208
GFSSOC '15 Winter S4 - Starry Nights
GFSSOC
12p
22.4%
114
GFSSOC '15 Winter J1 - Festive Fardin
GFSSOC
3
32.7%
390
GFSSOC '15 Winter J2 - Purchasing Presents
GFSSOC
3p
12.1%
235
GFSSOC '15 Winter J3 - Christmas Presents
GFSSOC
5p
20.0%
62
GFSSOC '15 Winter J4 - Christmas Music
GFSSOC
5p
13.2%
22
GFSSOC '15 Winter J5 - Secret Santa
GFSSOC
7p
58.7%
175
GFSSOC '15 Winter S5 - ORBOT
GFSSOC
15p
17.7%
22
GFSSOC '17 J2 - Admission Average
GFSSOC
3p
39.7%
395
GFSSOC '17 J3 - AIF Essay
GFSSOC
5
25.2%
74
GFSSOC '17 S4 - First Ace
GFSSOC
10
12.5%
36
GFSSOC '17 S3 - Zhany Zhanbies
GFSSOC
12
4.8%
14
GFSSOC '17 J4 - Top Courses
GFSSOC
7
11.8%
45
GFSSOC '17 J1 - Ramen and Studying
GFSSOC
3p
20.6%
198
GFSSOC '17 J5 - Choosing Extracurriculars
GFSSOC
7
29.5%
52
GFSSOC '17 S1 - Path to Waterloo
GFSSOC
7
39.4%
160
GFSSOC '17 S2 - Ace is Base
GFSSOC
7p
19.5%
39
GFSS Christmas Challenge P1 - Arithmetic Operators
GFSSOC
3
71.2%
171
GFSS Christmas Challenge P2 - Height Inspection
GFSSOC
3
61.0%
76
GFSS Christmas Challenge P3 - Candy Distribution
GFSSOC
5p
29.1%
79
GFSS Christmas Challenge P4 - Coal Counting
GFSSOC
7p
26.1%
59
Google Kickstart '17 Round A Problem A - Square Counting
Google Kick Start
12p
20.6%
18
Google Kickstart '17 Round C Problem A - Ambiguous Cipher
Google Kick Start
7p
43.0%
31
Google Kickstart '17 Round C Problem B - X Squared
Google Kick Start
7p
17.0%
47
Google Kickstart '17 Round C Problem C - Magical Thinking
Google Kick Start
10p
20.0%
10
Google Kickstart '17 Round F Problem A - Kicksort
Google Kick Start
7p
29.6%
7
ICPC NAQ 2016 G - Inverse Factorial
ICPC
10
17.8%
113
ICPC NAQ 2016 A - A New Alphabet
ICPC
3
43.7%
131
ICPC NAQ 2016 J - Quick Estimates
ICPC
3
51.2%
240
ICPC NAQ 2016 B - Arcade!
ICPC
15
24.8%
10
ICPC NAQ 2016 D - Brackets
ICPC
15
15.9%
60
ICPC NAQ 2016 C - Big Truck
ICPC
10
45.4%
73
ICPC NAQ 2016 H - Nine Packs
ICPC
10p
22.8%
52
ICPC NAQ 2016 K - Robotopia
ICPC
5
18.4%
24
ICPC NAQ 2016 F - Free Desserts
ICPC
20
12.8%
7
ICPC NAQ 2016 L - Unusual Darts
ICPC
15
12.7%
9
ICPC NAQ 2016 E - Dots and Boxes
ICPC
20
47.1%
5
ICPC NAQ 2016 I - Primonimo
ICPC
20p
40.0%
2
ICPC ECNA 2016 A - Bubbly Troubly
ICPC
20
33.3%
1
ICPC ECNA 2016 B - Foosball Dynasty
ICPC
10
19.7%
12
«
1
2
...
52
53
54
55
56
57
...
99
100
»