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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
9012 Maximum Self-Matching   31 691 46.46
24
29
25893 Longest Perfect Increasing Subsequence   39 691 39.45
8
12
4168 Square-free integers   13 690 44.82
14
20
20644 Zero Query   16 690 19.52
30
27
4053 Card Sorting   26 689 43.58
22
27
2059 Robotic Sort   5 688 32.73
28
26
25784 Bubble Sort   10 687 20.94
16
17
11401 Bazinga!   17 686 22.94
21
20
4191 Sky Code   12 685 28.39
19
26
5301 Query Problem   7 682 37.34
16
22
13105 DNA   5 680 34.14
11
24
18202 HUGE GCD   17 678 33.14
14
13
3937 Wooden Sticks   9 676 36.84
23
28
224 Vonny and her dominos   6 672 51.71
8
8
1022 Angels and Devils   6 669 31.08
26
25
2008 Dab of Backpack   17 669 23.63
21
17
176 Sum of one-sequence   5 667 33.56
11
27
300 Cable TV Network   2 667 36.32
24
30
3791 Street   8 666 51.38
10
13
14697 Loop Expectation   11 666 49.16
14
22
18 The Bytelandian Cryptographer (Act II)   4 665 29.34
25
1
220 Relevant Phrases of Annihilation   665 23.04
26
26
1881 Instruction Decoder   2 665 50.73
17
17
8598 Traverse through the board   6 665 53.52
10
11
2058 Reaux! Sham! Beaux!   4 660 32.89
23
6
2714 Cow Cars   5 659 37.38
14
17
1001 Babylonian Roulette   1 657 50.10
13
13
18963 Bhagat The Bit Man   10 657 31.58
5
12
15620 Postering   15 654 32.78
17
21
30827 THE LAST SHOT   9 653 28.99
9
7
26745 Grid   16 651 32.35
13
9
34875 Minimum Stocks   16 651 25.74
13
12
3591 Patting Heads   3 650 35.26
17
17
4179 Temptation Island   2 649 44.88
20
12
8796 Cubist Artwork   7 648 68.39
7
9
417 The lazy programmer   9 647 20.15
21
23
7753 Happy Numbers II   3 647 15.91
23
17
1000 Equidivisions   -1 646 23.42
13
13
13780 Audition   18 646 24.00
17
17
3974 Another Tree Problem   7 645 32.52
17
23
2826 Round-Robin Scheduling   12 643 36.38
23
22
58 Crime at Piccadily Circus   3 642 13.95
31
21
9503 Working in Beijing   2 641 49.17
4
4
26346 STUNNING GCD   10 641 37.12
1
8
34020 Ada and Pet   29 641 26.94
13
19
30500 THE HONEYCOMB MAZE   16 640 27.39
17
15
14961 Maximum Girth   638 55.32
17
26
7881 Ljutnja   3 637 24.24
34
21
12326 Dating Rishi   8 636 36.28
17
26
32724 nth number   4 636 24.60
12
11

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