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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
39786 Selling Greeting Cards   8 98 25.62
10
11
7691 Homo or Hetero   22 1676 36.26
15
11
9820 Through the troops   29 2059 44.44
12
11
32103 Degree of a Tree   15 231 30.62
13
12
11 Factorial   175 60715 45.14
6
12
1030 Triple Fat Ladies   106 19217 51.73
4
12
18174 REAL ROOTS   15 1287 60.04
6
12
34875 Minimum Stocks   16 674 25.46
13
12
12448 How Many Games?   53 3759 22.36
14
12
9861 Hotels Along the Croatian Coast   211 9067 41.78
10
12
346 Bytelandian gold coins   546 26020 25.23
11
12
66 Cross-country   38 4115 64.54
11
12
31 Fast Multiplication   49 9044 20.71
15
12
12914 Totient Extreme   45 1805 40.25
8
12
1418 The Cats and the Mouse   55 3001 33.76
10
12
69 Moulds   2 136 34.99
12
12
98 Dance Floor   3 727 40.34
12
12
217 Soldiers on Parade   2 130 28.09
17
12
376 A concrete simulation   15 1735 34.38
11
12
681 Building the Tower   2 105 20.11
17
12
693 Lethal Warfare   2 365 46.51
6
12
1475 Play with Digit Seven   3 136 38.22
28
12
1487 Query on a tree III   1 588 18.63
17
12
2450 Counting Rabbits   9 1240 34.35
10
12
2525 Encoding   3 752 29.15
12
12
3133 Here We Go(relians) Again   3 171 40.30
12
12
3870 Military Story   3 286 28.81
21
12
4179 Temptation Island   2 655 45.09
20
12
4413 Gem   3 99 40.00
23
12
4523 Binomial Coefficients   210 41.58
23
12
4987 Goal for Raúl   6 548 30.11
12
12
6803 Absurd prices   2 388 23.82
12
12
7104 Feanor The Elf   -1 733 40.24
12
12
7426 Imperial Units   3 506 45.76
3
12
8442 Problem 3   4 728 54.44
4
12
9050 Tohu again   2 865 29.24
17
12
9529 Maya Calendar   2 221 30.60
17
12
10145 Birthday Cake   7 260 36.32
12
12
11175 The Ball Game   15 2291 44.10
2
12
11477 Meeting For Party   5 490 28.25
17
12
11933 DIAGONAL   6 962 24.58
12
12
12318 My Reaction when there is no internet connection   32 25.93
23
12
12397 Johnny plays with connect 4   2 54 30.73
17
12
13046 The Glittering Caves of Aglarond   6 919 34.88
5
12
13093 Mosque   1 49 39.05
6
12
13398 Contest Hall Preparation   1 341 43.42
15
12
14049 Annual Day   1 91 20.65
12
12
14138 Amazing Factor Sequence   38 2351 37.25
11
12
14926 abdou set   4 61 46.99
6
12
14980 MVP   3 29 44.83
17
12

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