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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
4155 OTOCI   2 512 45.42
26
34
12005 Grass Planting   11 613 45.42
29
19
386 Help the problem setter   105 45.45
20972 Alia and Cryptography   3 101 45.45
30
26
10232 Distinct Primes   85 5932 45.48
10
9
32079 Ada and Greenflies   8 212 45.50
13
32
7734 Twist and whirl - want to cheat   8 245 45.51
24
17
25236 Defense of a kingdom 2   3 119 45.51
1
9
34826 Shinchan and Magic Card   6 117 45.52
6
15
42529 Robert Plays The Viola   3 39 45.54
4
8
4200 Hamster flight   13 1160 45.54
5
13
7217 Training for final   26 2101 45.57
8
6
27496 Again Eid Salami   3 129 45.57
23
34
27268 Count Subsets   19 222 45.65
10
22
8629 Stock Prices   1 103 45.70
17
17
2631 Chomp   111 45.70
41213 Diamond Collector   2 29 45.71
6
12
7426 Imperial Units   3 506 45.76
3
12
8104 Friendly Knights   151 45.76
869 Galactic Import   3 142 45.76
5
5
10466 Enough of analyzing, let’s play   5 262 45.78
17
23
11157 The Great Escape   83 45.79
14977 Attack of the Bloons   5 370 45.80
9
9
41823 Martia Auris 3020   8 45.83
9219 Nikhil Problem   2 225 45.88
17
17
20100 Honda and Kagawa   3 385 45.91
1
21
10084 Fake Scoreboard   24 45.95
11984 Dome of Circus   21 45.95
27313 Number of Binary Trees   6 81 45.96
17
26
30922 Ada and Plum   13 154 45.97
26
26
2136 Candy II   2 613 46.00
17
17
10814 Unique Paths   130 46.01
6340 ZUMA   7 517 46.02
17
34
4565 What is your Logo   3 920 46.03
1
13
3394 Lagrange’s Four-Square Theorem   4 532 46.08
1
9
40642 Chips Challenge   1 28 46.09
17
17
10439 Walking Robot   1 114 46.15
34
34
15244 Davids Quest   2 44 46.15
26
17
35716 Trending GCD (Hard)   1 17 46.15
35144 High CG Boy   5 293 46.17
4
4
27375 Garden of Mangu   6 87 46.18
19
19
19152 Digo Goes Training   1 240 46.18
23
17
5102 Mystic Craft   57 46.20
12959 Basic Grapes Instinct   1 231 46.21
17
1
12880 Sheep   40 2018 46.22
9
10
260 Containers   3 298 46.22
17
14
5317 Tetravex Puzzle   2 284 46.25
23
6
40469 Watching over the Mines of Moria   2 25 46.25
23
23
4168 Square-free integers   14 788 46.27
16
21
14973 Reverse Fox Hunt   2 81 46.30
17
9

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