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2025-09-05
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WHITESPACE
list of classical problems
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ID
NAME
CODE
USERS
ACC %
7805
Kitchen Robot
KITROB
90
32.24
7807
The Lucky Prisoner
LPRISON
27
9.84
7826
Tree Isomorphism
TREEISO
620
23.65
7851
Stacks of Zippy
JZPSTA
19
16.41
7857
Tower Game (Hard)
ADV04A1
62
14.63
7859
Upper Right King (Hard)
ADV04B1
171
37.39
7860
Deal or No Deal
ADV04C
13
30.77
7861
UFO
ADV04D
41
30.21
7862
Prisoner of Benda
ADV04E
27
25.83
7864
Four Chips (Hard)
ADV04F1
167
30.31
7866
Regular expressions (Hard)
ADV04G1
140
27.33
7868
Join
ADV04H
20
46.74
7870
Invisible point
ADV04J
1671
42.96
7874
Calculator
ADV04K
29
24.36
7875
Miles and kilometers
ADV04L
612
47.06
7881
Ljutnja
C1LJUTNJ
641
24.32
7882
Tabovi
C1TABOVI
333
49.56
7884
Crni
C2CRNI
60
55.93
7886
Boards (Hard)
ADV04I1
40
37.14
7891
Fibonacci Sequence
SPFIBO
102
30.56
7934
Operating System Problems (Task Scheduling)
OSPROB1
142
53.65
8097
Islands
IOIISL08
73
46.82
8100
Shifting Lights
SHLIGHTS
229
31.20
8104
Friendly Knights
KFRIENDS
151
45.76
8119
CIRU2
CIRUT
175
36.22
8177
Beautiful numbers EXTREME
JZPEXT
291
27.46
8222
Substrings
NSUBSTR
1324
30.12
8265
Zero Count
ZEROCNT
15
12.03
8316
Win gold medal
WINGOLD
55
26.03
8317
Red Balls
SIGNGAME
47
44.77
8318
color the balls
PLAYSIGN
69
42.80
8363
COSTLY CHESS
CCHESS
1763
43.06
8371
TRIANGULAR PRISM
PRISMSA
2096
68.43
8374
PARKET
PARKET1
1854
56.20
8398
Quadratic Equation
QUADRATE
605
29.01
8456
PRIMITIVEROOTS
PROBLEM4
374
46.28
8478
Ancient Pocket Calculator
POCALC1
7
4.25
8491
Messy Phone List
PHONMESS
54
19.69
8542
Modern Pocket Calculator
POCALC2
35
9.05
8558
Linear Equation Solver
LINQSOLV
22
34.09
8574
Four in a row
FOUROW
23
17.12
8591
Prime Permutations
PRIMPERM
110
30.96
8886
Guess number!
GNUM
21
5.90
9042
HQNP Incomputable
HQNP
48
33.33
9046
Clock Hands
HANDS
378
22.32
9070
Lightning Conductor
LIGHTIN
685
34.85
9086
Formula 3D
JZPFOR
6
9.86
9190
Perfect Maze
TREEMAZE
31
1.73
9199
Circular Track
SPEED
3351
40.29
9534
Turn on the lights
JZPLIT
73
33.00
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