Sphere Online Judge
sign in
News
Problems
basics
challenge
classical
none
partial
riddle
tutorial
Status
Ranking
Forum
SPOJ
time:
2025-09-05
23 : 12 : 07
All
ADA95
DOC
ASM32-GCC
ASM32
ASM64
GAWK
MAWK
BASH
BC
BF
C-CLANG
C
NCSHARP
CSHARP
C++ 4.3.2
CPP
CPP14-CLANG
CPP14
C99
CLPS
CLOJURE
COBOL
COFFEE
LISP clisp
LISP sbcl
D
D-CLANG
D-DMD
DART
ELIXIR
ERL
FSHARP
FANTOM
FORTH
FORTRAN
GO
GOSU
GRV
HASK
ICON
ICK
JAR
JAVA
JS-RHINO
JS-MONKEY
JULIA
KTLN
LUA
NEM
NICE
NIM
NODEJS
OBJC
OBJC-CLANG
OCAML
OCT
PAS-GPC
PAS-FPC
PDF
PERL
PERL6
PHP
PICO
PIKE
PS
PRLG-swi
PROLOG
PYTHON
PYPY
PYPY3
PYTHON3
PY_NBC
R
RACKET
RUBY
RUST
SCALA
SCM guile
CHICKEN
SCM qobi
SED
ST
SQLITE
SWIFT
TCL
TEXT
UNLAMBDA
VB.NET
WHITESPACE
list of classical problems
<
Previous
7
8
9
10
11
12
13
14
15
16
17
Next
>
ID
NAME
CODE
USERS
ACC %
2009
Cryptography
CRYPTO
142
4.79
2019
The Rolling Ball
ROLLBALL
4
5.48
2022
Truth Or Lie
TRUTHORL
104
21.17
2023
One Instruction Computer Simulator
ONEINSTR
47
10.58
2031
Please help You-Know-Who
YKH
39
28.65
2038
Rectangle Tiling
TILING
116
41.61
2047
Stone Removing Game
REMGAME
133
37.96
2050
Strange Billboard
CERC07B
805
60.55
2051
Cell Phone
CERC07C
161
31.43
2052
Hexagonal Parcels
CERC07H
76
28.93
2053
Key Task
CERC07K
1188
31.78
2054
Gates of Logic
CERC07L
37
22.91
2055
Weird Numbers
CERC07N
346
35.99
2056
Rectangular Polygon
CERC07P
135
48.12
2058
Reaux! Sham! Beaux!
CERC07R
664
32.90
2059
Robotic Sort
CERC07S
740
33.19
2060
Tough Water Level
CERC07W
36
18.21
2070
Minimum Distance
MINDIST
86
16.85
2123
Candy I
CANDY
29118
44.22
2124
Last Non-Zero Digit of Factorials
FCTRL4
488
25.49
2125
Number Labyrinth
LABYR2
64
25.55
2127
Rain
RAIN3
438
40.61
2128
K-In-A-Row
KROW
446
33.76
2129
Cake
CAKE2
70
21.59
2131
Get Back!
GETBACK
55
40.67
2132
Puzzle
PUZZLE2
89
32.68
2136
Candy II
CANDY2
613
46.00
2138
Pibonacci
PIB
48
14.11
2139
Gossipers
GOSSIPER
602
31.76
2140
(un)Fair Play
FAIRONOT
75
38.08
2141
Golden Garden
GARDEN
17
12.20
2142
Arranging Flowers
FLOWERS
25
9.87
2143
Dependency Problems
DEPEND
521
38.96
2144
K Edge-disjoint Branchings
FOREST
9
12.39
2147
Root of a Linear Equation
ROOT
66
8.90
2148
Candy III
CANDY3
20552
25.33
2149
Biased Standings
BAISED
3678
33.66
2150
Counting Subsequences
SUBSEQ
1031
29.42
2151
Digital Calculator
CALCULAT
23
5.69
2152
Hilbert Curve
FRACTAL
13
16.29
2153
Internet is Faulty
IMATCH
69
38.54
2154
Kruskal
KRUSKAL
85
14.03
2157
Anti-Blot System
ABSYS
12967
45.24
2159
Delicious Cake
CAKE3
30
14.64
2160
Here-There
HERE
30
24.76
2161
Pixel Shuffle
JPIX
34
21.03
2162
Towers of Powers
TOWER
26
13.87
2171
Ambiguous Codes
AMCODES
85
39.47
2172
Ballroom Lights
BALLIGHT
35
32.94
2173
Car Plates Competition
CPC
261
42.05
© Spoj.com. All Rights Reserved. Spoj uses
Sphere Engine
™ © by
Sphere Research Labs
.