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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
21096 Word Counting 2   3 175 29.70
34
17
21135 Distinct Viewpoints   2 23.08
34
1
21458 Satay Skewer   2 84 28.09
34
17
21636 Electric Car Rally   1 15 44.90
34
17
21683 Bhagat and String   2 30 28.67
34
50
21964 Golf Bot   5 85 36.36
34
27
21971 The Big Painting   1 48 22.49
34
17
22271 Periodic function, trip 3   13 52.07
34
17
22343 Norma   2 268 29.01
34
17
22549 Divisors of factorial (extreme)   5 96 26.15
34
36
22554 Kingdom   1 41 45.39
34
34
22675 A conjecture of Paul ErdÅ‘s (hard)   2 5 5.81
34
34
23350 Mineral Farm   18 20.13
34
34
23511 Segfault   4 16 11.93
34
17
23538 Carina   2 21 12.11
34
17
23737 Ogledala   1 54 37.50
34
17
23821 Magic Schools   1 29 20.65
34
34
24730 Magical colorful cats (hard)   1 15 25.53
34
34
25015 Subsequences with modulo   5 65 21.26
34
34
25024 Nth Prime   7 114 17.33
34
39
25339 Eefun and Doors   1 11 25.76
34
17
25396 A Terribly Grimm Problem   3 21 30.10
34
30
25450 When Does The World End   1 5 4.27
34
50
25475 Perfect packing   3 15 51.24
34
39
25482 Kimetto Kipsang and Kipchoge   1 44 21.48
34
34
25819 DOMINO   1 21 27.78
34
34
26182 Perfect Superstring   2 13 68.18
34
34
26184 Colorful Beads   2 38 37.12
34
34
26450 Palindromic Primes (Hard)   6 41 25.37
34
30
26663 Theater shade in Berland   1 28 11.96
34
17
26721 I LOVE Kd-TREES III   4 84 17.27
34
34
26843 Who is the Best?   1 10 26.53
34
34
26916 Extremely Lagged Fibonacci   3 31 33.91
34
34
27337 LIS and tree   1 42 29.06
34
26
27340 Terrorists   2 21 23.49
34
34
27341 Jumping Joey   1 6 18.42
34
17
28315 Shoumiks Weakness   1 14 22.33
34
34
28463 Insect invasion   1 21 9.90
34
34
28465 Koalas   1 17 15.24
34
17
29458 Alphabetic Rope2   2 123 49.85
34
34
29461 Alphabetic Rope3   4 149 56.86
34
26
30737 Ada and Homework   5 69 25.40
34
28
30756 Ada and Numbering   10 130 17.50
34
34
30783 Ada and Cucumber   6 110 19.44
34
24
30961 Non Coprime Sequences(Hard)   4 17 7.32
34
34
31938 SLIS   2 145 39.39
34
34
31971 NEO   1 10 3.44
34
50
31976 Ada and Tulips   1 20 18.80
34
34
31979 Ada and Party   4 25 56.36
34
28
32093 Where The Friends Meet!   3 42 28.89
34
34

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