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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
8433 Revenge of the squares (variation)   1 490 49.27
17
17
8434 Kolica   2 68 40.10
34
17
8449 Plotting functions (variation)   1 24 22.14
17
17
8461 Adventure in Moving   44 28.43
17
17
8491 Messy Phone List   1 54 19.69
34
17
8495 Maximum Subset of Array   7 735 27.80
19
17
8574 Four in a row   2 23 17.12
26
17
8586 Factorial factorisation   2 45 20.18
17
17
8624 Nim-B Sum   -1 631 61.46
9
17
8625 Just The Simple Fax   1 80 42.15
34
17
8629 Stock Prices   1 103 45.70
17
17
8667 Board-Queries   1 52 21.51
17
17
8758 Cover the string   6 223 23.17
14
17
8793 Separate Points   4 125 24.17
17
17
8842 Boring Homework   3 154 42.75
17
17
8843 Complete the Set   1 57 32.13
1
17
8850 Juice Extractor   1 125 16.41
17
17
8985 Line up   19 419 51.82
16
17
9070 Lightning Conductor   3 689 34.97
9
17
9076 Hablu and Bablu   1 160 18.76
12
17
9081 Snail family problems   2 85 23.48
34
17
9097 Derangements HARD   1 120 50.00
1
17
9098 Long Common Subsequence   2 199 36.64
34
17
9104 Match the words   3 418 50.39
9
17
9117 Faculty Dividing Powers   11 375 22.55
17
17
9137 Pyramid Sums   96 35.60
34
17
9219 Nikhil Problem   2 225 45.88
17
17
9242 B Beware, the end of the world   1 32 24.88
17
17
9255 Publication   3 42 60.75
23
17
9260 Perfect Road   16 20.37
17
17
9334 Point in tetrahedron   2 141 57.59
9
17
9386 Re-Arrange II   9 278 44.33
21
17
9430 The game of 31   165 39.30
13
17
9505 Distinct Subtrees   1 21 25.27
17
17
9510 Ads Proposal   1 72 26.14
17
17
9512 Bombing   89 23.46
17
17
9527 Department   11 7.37
34
17
9532 Transportation   1 22 28.57
17
17
9636 A Canvas Building   71 18.04
17
17
9643 He is Lazy   2 157 41.73
17
17
9685 Zombie’s Treasure Chest   2 84 13.66
9
17
9686 Yummy Triangular Pizza   485 65.64
26
17
9817 Shortcut   54 25.94
17
17
9832 Matrix inverse   2 88 59.49
12
17
9858 Štef and Barica   2 77 37.69
34
17
9891 Please, go first   221 54.66
26
17
9894 Tichu   2 80 38.63
26
17
9935 Break the Chocolate   16 1659 34.62
4
17
9938 Disney Fastpass   1 37 25.32
17
17
9939 Eliminate the Conflict   1 50 39.59
17
17

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