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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
15562 Find Lexicographically Smallest Permutation   13 365 40.41
16
13
7567 Divisor Summation Powered   13 368 21.41
17
23
10399 Conga line   -1 369 36.43
9
9
13686 finding maximum possible number   8 369 22.08
15
27
26344 Related or not   9 369 52.35
8
9
120 Solitaire   8 370 23.48
26
16
9385 Strictly not a Prime   9 370 28.68
17
12
14977 Attack of the Bloons   5 370 45.80
9
9
17399 G Force   17 370 33.25
10
15
36670 Bipartite Permutation   14 370 46.34
6
15
30947 Sabbir and gifts   21 374 32.92
16
13
1476 Maximum Profit   7 375 32.36
20
34
3459 SkyScrapers   3 375 38.37
17
17
7192 Integral Maximization   1 375 38.35
50
50
8456 PRIMITIVEROOTS   8 375 46.34
8
20
9117 Faculty Dividing Powers   11 375 22.55
17
17
1285 Continuous Fractions Again   5 376 41.86
15
10
12030 Blackout   5 376 44.48
20
15
34096 Counting Divisors (general)   6 376 37.39
38
45
413 Word Puzzles   4 377 18.26
30
14
15766 Enjoy Sum with Operations   15 377 27.21
20
26
9046 Clock Hands   2 378 22.32
34
26
9119 Indiana Jones and the lost Soccer Cup   8 378 29.07
11
13
32579 Ada and Expenses   22 378 51.28
10
12
20038 Easiest Loop 1   3 379 48.58
6
17
33210 Ada and Alley   16 380 37.33
7
14
1843 Leonardo Notebook   3 382 34.85
17
34
20100 Honda and Kagawa   3 385 45.91
1
21
32900 K-dominant array   3 385 31.63
30
30
351 Ha-noi!   386 42.45
1
1
25334 Eefun Guessing Words   7 386 22.91
14
7
6286 Sum of products   11 387 36.75
19
28
7507 Wonderful Randomized Sum   4 387 40.92
1
1
6803 Absurd prices   2 388 23.82
12
12
90 Minimizing maximizer   3 389 24.84
17
26
384 Any fool can do it   2 389 32.52
17
17
4329 Counting K-Rectangle   4 389 30.05
20
28
13106 KOSARE   3 389 50.70
23
39
19308 LCM   8 390 18.71
17
24
399 Team Rankings   1 391 53.58
17
9
4525 Digger Octaves   6 391 35.55
17
21
13376 The new President   4 392 31.47
11
11
19786 Mr Toothless and His GCD Operation   7 392 30.81
6
9
21751 Help the Heroes   10 393 32.32
9
13
13363 WIND VANE   6 394 31.48
17
17
3753 GONDOR   4 395 53.39
13
13
4035 NERED   2 395 57.76
9
13
3109 Longest Common Prefix   4 396 25.51
38
34
21174 Gallantry   1 397 51.22
14
11
34683 Billing Issue   -5 397 49.53
1
1

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