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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
24313 Kule   2 20 17.16
17
26
16244 Kusac   6 411 36.44
14
21
5531 Kutevi Hard   90 43.40
38 Labyrinth   98 5361 25.82
18
16
3394 Lagrange’s Four-Square Theorem   4 532 46.08
1
9
17955 Lalith Dosa   9 428 26.24
12
23
15086 Land Acquisition   39 1504 29.48
24
30
7778 Land Division   1 40 43.50
17
17
148 Land for Motorways   3 215 41.02
17
21
9378 Landfill   70 42.44
4189 Landing   1 8 4.08
50
50
350 Landscaping   1 99 30.08
33372 Lannister Army   12 412 21.02
20
29
11090 Large banner   33 32.26
15259 Large Knapsack   46 2294 26.12
17
17
2734 Large party   40 26.19
20063 Large subsequence Problem   20 453 42.16
10
14
34864 Large Sum   8 236 18.39
12
12
18450 Largest Increasing Sub-Matrix   12 12.24
7782 Largest Labeled Common Ancestor   1 208 57.44
25131 Largest Odd Divisor   17 1438 33.60
6
7
1805 Largest Rectangle in a Histogram   229 8762 28.42
18
23
20863 Largest Submatrix   82 27.21
27520 Laser   5 43 19.94
17
17
25690 Laser Beam   9 75 26.30
9
22
26183 Laser Beam 2.0   1 4 5.06
17
17
25789 Laser Maze   8 50 52.80
24
14
3861 Laser Phones   31 1420 28.89
20
18
36342 Lasertag   2 11 33.93
34
17
6827 Last Minute Construction   24 17.36
2124 Last Non-Zero Digit of Factorials   4 488 25.49
26
34
14033 Late Summer Searching   1 12 33.33
3883 LATGACH3   55 3205 56.47
10
20
10080 Lawn Mower   4 231 52.57
12
6
18637 Lawrence of Arabia   61 28.11
347 Lazy Cows   4 271 28.54
27
21
20752 LAZY FRIENDS   3 40 37.09
17
13
19308 LCM   8 390 18.71
17
24
11345 lcm addition   2 78 32.11
34
34
7488 LCM GCD Love   6 187 19.17
17
13
33062 LCM Pesticide   2 11 35.94
50
50
5971 LCM Sum   83 3962 26.35
20
29
8326 Leaky containers   34 43.12
36538 Learn You a Haskell for Great Good!   1 11 30.23
34
34
27378 Legend of Heta   3 69 18.56
30
30
9161 Legendre symbol   190 45.42
9
9
4198 Lego   5 195 25.35
24
22
1473 Lemon Tree in the Moonlight   28 19.74
50
34
15634 Lennys Lucky Lotto Lists   11 239 31.74
7
14
28466 Leonardo de Pisa   3 51 17.44
1
1

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