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
...
42
43
44
45
46
47
...
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
Educational DP Contest AtCoder L - Deque
CCC '04 S4 - Space Turtle
IOI '04 P4 - Phidias
COCI '14 Contest 6 #4 Kratki
A Game
CCO '23 P1 - Binaria
Educational DP Contest AtCoder H - Grid 1
Problem ▾
Category
Points
AC %
Users
GFSSOC '17 S2 - Ace is Base
GFSSOC
7p
19.5%
39
GFSSOC '17 S1 - Path to Waterloo
GFSSOC
7
39.4%
160
GFSSOC '17 J5 - Choosing Extracurriculars
GFSSOC
7
29.5%
52
GFSSOC '17 J4 - Top Courses
GFSSOC
7
11.8%
45
GFSSOC '17 J3 - AIF Essay
GFSSOC
5
25.4%
74
GFSSOC '17 J2 - Admission Average
GFSSOC
3p
39.7%
394
GFSSOC '17 J1 - Ramen and Studying
GFSSOC
3p
20.5%
197
GFSSOC '15 Winter S5 - ORBOT
GFSSOC
15p
17.7%
22
GFSSOC '15 Winter S4 - Starry Nights
GFSSOC
12p
22.4%
113
GFSSOC '15 Winter S3 - PalinDrone
GFSSOC
7p
19.9%
208
GFSSOC '15 Winter S2 - Soko-Boop
GFSSOC
12p
22.5%
63
GFSSOC '15 Winter S1 - OR-deal
GFSSOC
5p
31.4%
330
GFSSOC '15 Winter J5 - Secret Santa
GFSSOC
7p
59.3%
170
GFSSOC '15 Winter J4 - Christmas Music
GFSSOC
5p
13.2%
22
GFSSOC '15 Winter J3 - Christmas Presents
GFSSOC
5p
20.0%
62
GFSSOC '15 Winter J2 - Purchasing Presents
GFSSOC
3p
12.2%
232
GFSSOC '15 Winter J1 - Festive Fardin
GFSSOC
3
32.7%
389
GFSSOC '15 Fall S5 - Raider
GFSSOC
17p
14.0%
137
GFSSOC '15 Fall S4 - Mostly Talking
GFSSOC
15p
15.8%
375
GFSSOC '15 Fall S3 - System(0);
GFSSOC
10p
22.6%
89
GFSSOC '15 Fall S2 - Hearth
GFSSOC
5p
42.4%
353
GFSSOC '15 Fall S1 - T-Shirts
GFSSOC
5p
23.6%
87
GFSSOC '15 Fall Practice P5 - Bruno and Pumpkins
GFSSOC
7p
28.5%
177
GFSSOC '15 Fall Practice P4 - Bruno and Fibonacci
GFSSOC
5p
23.9%
235
GFSSOC '15 Fall Practice P3 - Bruno and Beads
GFSSOC
5p
45.3%
133
GFSSOC '15 Fall Practice P2 - Bruno and Tennis
GFSSOC
5p
29.2%
99
GFSSOC '15 Fall Practice P1 - Bruno and Trig
GFSSOC
3p
37.8%
439
GFSSOC '15 Fall J5 - Nightmare-a-thon
GFSSOC
10p
32.2%
546
GFSSOC '15 Fall J4 - Marathon
GFSSOC
7p
39.8%
803
GFSSOC '15 Fall J3 - Equation Solver
GFSSOC
5p
56.9%
384
GFSSOC '15 Fall J2 - Fizz Fuzz
GFSSOC
5p
34.6%
296
GFSSOC '15 Fall J1 - CodeFights
GFSSOC
3p
40.4%
422
GFSSOC '14 Winter S5 - Stardust Snow
GFSSOC
20p
12.2%
70
GFSSOC '14 Winter S4 - Stalactites
GFSSOC
17p
23.5%
249
GFSSOC '14 Winter S3 - Hide n Seek
GFSSOC
12p
25.0%
186
GFSSOC '14 Winter S2 - Speech
GFSSOC
5p
24.4%
168
GFSSOC '14 Winter S1 - Friendship is a number
GFSSOC
5p
42.5%
200
GFSSOC '14 Winter J5 - Pursuit of Knowledge
GFSSOC
10p
24.6%
482
GFSSOC '14 Winter J4 - Tic Tac Moe!
GFSSOC
5p
29.1%
349
GFSSOC '14 Winter J3 - Waiting
GFSSOC
3p
51.7%
429
GFSSOC '14 Winter J2 - Wow much parking lot
GFSSOC
3p
52.5%
495
GFSSOC '14 Winter J1 - Flying Plushies
GFSSOC
3p
50.6%
884
GFSS Christmas Challenge P4 - Coal Counting
GFSSOC
7p
27.2%
56
GFSS Christmas Challenge P3 - Candy Distribution
GFSSOC
5p
29.1%
77
GFSS Christmas Challenge P2 - Height Inspection
GFSSOC
3
60.1%
73
GFSS Christmas Challenge P1 - Arithmetic Operators
GFSSOC
3
70.8%
168
German Nouns
Uncategorized
5
56.6%
432
Geometric Sequence
Uncategorized
10
3.4%
8
Geography Class
Uncategorized
5p
13.9%
67
GCC '16 P3 - Hang Gliding Fun
Uncategorized
25p
12.5%
43
«
1
2
...
42
43
44
45
46
47
...
99
100
»