list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
14887 Good Travels   30 652 29.43
26
24
8791 Dynamic LCA   9 494 29.70
26
24
694 Distinct Substrings   92 5782 26.62
21
24
279 Interesting number   26 846 24.20
19
24
428 Particular Palindromes   5 503 32.26
22
24
5084 Discrete Math Problem   6 287 31.66
15
24
9570 Counting binary strings   7 340 53.14
17
24
10233 Magical Bridges   9 170 27.03
29
24
12866 Nlogonian Tickets   12 333 20.93
25
24
17732 Salary Management   10 236 19.26
22
24
24957 Petya Brother and Repairment of Roads   9 177 28.28
24
24
26308 Get higher and higher   7 146 39.57
13
24
27261 Matrices with XOR property   8 68 20.91
20
24
30394 Prime is fun   8 87 35.71
22
24
30906 Ada and Unique Vegetable   8 494 35.62
28
24
32577 Ada and Terramorphing   11 281 12.10
31
24
34537 Prime Lover Finding   7 67 29.43
28
24
32245 Apoorv and Maximum Inversion   21 150 33.15
22
24
1022 Angels and Devils   6 675 31.13
26
25
22463 Smallest Number (medium)   9 70 21.04
29
25
25179 Kaos   9 282 40.67
19
25
705 New Distinct Substrings   42 3897 26.82
26
25
28609 Boat Burglary   15 155 14.43
23
25
9942 Holiday Accommodation   30 1120 26.18
23
25
26319 I LOVE Kd-TREES   11 228 41.63
20
25
1442 Strange Food Chain   19 960 19.81
22
25
3266 K-query   248 6127 25.55
21
25
17 The Bytelandian Cryptographer (Act I)   9 1391 41.45
15
26
19 The Bytelandian Cryptographer (Act III)   1 129 34.05
17
26
45 Commedia dell Arte   2 251 32.28
5
26
49 Hares and Foxes   1 119 7.85
17
26
90 Minimizing maximizer   3 389 24.84
17
26
135 Men at work   1 268 38.56
24
26
185 Chase   2 221 24.80
1
26
200 Monodigital Representations   1 168 30.27
26
26
208 Store-keeper   2 135 15.52
34
26
220 Relevant Phrases of Annihilation   699 23.26
26
26
367 Empodia   2 165 27.51
17
26
371 Boxes   553 35.69
1
26
373 Greedy island   6 517 33.62
26
26
389 Use of Hospital Facilities   1 53 15.47
34
26
416 Divisibility by 15   5 1027 15.52
31
26
419 Transposing is Fun   1 307 36.85
17
26
518 Zig-Zag Permutation   1 51 31.25
26
26
733 Mountain Walking   1 765 25.67
34
26
780 The Archipelago   40 41.41
34
26
1329 Matrix   6 414 17.21
28
26
1434 Equation   5 421 33.46
21
26
1440 Use of Function Arctan   4 543 29.24
5
26
1451 01 Sequence   1 99 28.63
9
26

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