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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
34063 Chiaki With Intervals (Easy)   9 50.00
27381 Emoticon   27 793 50.03
8
14
15429 Counting Ids   15 1895 50.04
5
5
6731 Coeficientes   2 1253 50.05
10
9
13166 Totient in permutation (medium)   17 50.10
339 Recursive Sequence   75 3601 50.10
20
17
2178 He is offside!   5 8343 50.12
3
4
1876 Dragon Curves   2 174 50.12
1
17
4160 A1 Road   84 50.24
15555 Check the coprimeness   23 3224 50.26
3
5
15454 How to Handle the Fans   39 1505 50.26
12
11
2716 Maximal Quadrilateral Area   -1 6215 50.28
3
8
10293 FANCY NUMBERS   18 1714 50.28
7
9
15433 Greedy Walking   12 403 50.28
13
16
3374 Scavenger Hunt   10 1362 50.31
9
10
30692 Ada and Rain II   3 115 50.34
12
23
1108 Card Trick   68 2171 50.38
21
24
7668 Pebble Solver   15 1995 50.40
8
11
20872 Counting Pairwise Coprime Triples   1 42 50.40
34
34
4157 Domino   4 54 50.42
42
42
18056 Robert Langdon & Cipher   2 563 50.46
1
13
10675 GENIJALAC   46 50.52
15149 play with prime numbers (III)(hard )   6 28 50.53
34
28
7296 Trees Again   5 166 50.53
21
30
359 Alpha Centauri Tennis   2 1721 50.53
3
8
100 Tower of Babylon   44 3050 50.53
19
21
739 The Moronic Cowmpouter   19 3038 50.57
11
15
13042 Gandalf vs the Balrog   -2 360 50.59
1
1
7015 Party   -1 999 50.60
3
15
18941 True Friends   29 933 50.60
12
12
31412 ShaatChara   3 67 50.61
14
21
7868 Join   1 18 50.63
34
17
10377 project groups   128 50.69
34
34
1881 Instruction Decoder   2 664 50.71
17
17
368 Cobbled streets   98 5374 50.75
13
12
26978 Hofstadter–Conway 10000 dollar sequence   1 8 50.82
17
34
9097 Derangements HARD   1 81 50.83
1
17
5143 Binary Integer   49 50.85
9445 Attack of the Clones   26 50.85
26773 Secret Key   3 28 50.85
17
12
25475 Perfect packing   3 8 50.86
34
39
4564 Chop Ahoy! Revisited!   55 2937 50.86
12
14
21171 Fractal domino   14 50.88
8985 Line up   19 388 50.93
16
17
11840 Sum of Squares with Segment Tree   53 2006 50.94
23
18
26180 Folding Stick   1 23 50.98
17
17
6709 Multiplying by Rotation   1 88 51.00
5016 Guernica   19 51.06
32579 Ada and Expenses   22 352 51.10
10
12
6830 Soccer Bets   6 1596 51.11
8
9

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