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2025-09-06
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WHITESPACE
list of classical problems
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ID
NAME
CODE
USERS
ACC %
7322
Prime Pattern
CHEFJUN
97
36.16
7323
Happy Days
CHEFJUL
47
44.74
7333
Shuffle Music
SHUFFLEN
9
26.67
7337
Shuffling
SHUFFLE1
24
18.09
7356
Iterated Bitcount Function
ITERBIT
36
16.47
7380
Factorial challenge
FUNFACT
344
31.49
7430
Tower Of Hanoi - Revisited
RANJAN02
2144
50.90
7600
Milk Trading
MLK
186
30.71
7603
Fibonacci Factor
FIBFACT
26
25.49
7683
Powered and Squared
CSQUARE
717
27.21
7685
Flowers
FLWRS
352
32.98
7696
Encryption
CENCRY
1003
35.87
7709
Jumping Zippy
JZPCIR
68
54.35
7733
Happy Numbers I
HPYNOS
9403
53.36
7772
Help a researcher
HLPRSRCH
62
48.95
7851
Stacks of Zippy
JZPSTA
19
16.41
7946
Check Ramsey
HS10RMSY
13
19.48
7947
Almost square factorisation
HS10SQFT
123
52.29
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
8456
PRIMITIVEROOTS
PROBLEM4
374
46.28
8467
GRADE POINT AVERAGE
GPA1
634
30.08
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
687
34.91
9086
Formula 3D
JZPFOR
6
9.86
9185
TORNJEVI
TORNJEVI
224
33.41
9199
Circular Track
SPEED
3351
40.29
9534
Turn on the lights
JZPLIT
73
33.00
9535
Turn on the lights 2
JZPLIT2
23
32.97
9753
Tuple Division
TUPLEDIV
17
3.92
9788
Friends of Friends
FACEFRND
7149
63.27
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