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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
26928 The Crossover   9 105 16.88
22
16
27267 Changus Final Battle   8 266 54.72
6
16
27497 Binary Protean Number   6 144 45.38
11
16
28607 Descending Alternating Sums   9 137 38.38
10
16
32257 Apoorv and Math problem   11 174 14.96
29
16
206 Bitmap   247 9661 28.29
15
16
6322 The hunt for Gollum   18 710 23.02
25
16
22382 Euler Totient Function Depth   24 398 37.13
15
16
4082 BLAST   30 1761 51.74
9
16
1713 Funny scales   12 563 30.57
17
16
13577 Card Game   13 503 24.51
14
16
14971 The Foxens Treasure   11 231 35.31
14
16
8545 Subset sum   45 1943 40.12
12
16
4580 ABCDEF   218 7923 29.36
14
16
40 Lifting the Stone   6 1651 23.80
13
16
530 Divisors 2   10 936 52.47
12
16
1700 Traveling by Stagecoach   9 476 39.35
17
16
14974 Foxling Feeding Frenzy   15 466 41.90
15
16
15433 Greedy Walking   13 507 51.19
13
16
12183 Help the Commander in Chief   46 916 29.10
15
16
38 Labyrinth   98 5361 25.82
18
16
39 Piggy-Bank   140 8250 35.53
14
16
5977 Weird Function   33 1155 18.96
18
16
30919 Sabbir and gcd problem   17 336 23.03
16
16
31099 Ada and CAPTCHA   9 179 17.31
20
16
10514 K12 - Building Construction   60 2072 26.48
12
16
28288 Super Amoeba   11 204 37.34
18
16
28303 Ada and Plants   14 325 33.81
15
16
10471 Aliens at the train, again!   28 815 44.66
16
16
9493 Advanced Fruits   93 2263 37.52
19
16
6294 Yodaness Level   74 3576 49.31
15
16
34229 "Operation - Modulo"   19 956 19.50
2
16
13769 Roommate Agreement   52 1493 31.45
11
16
97 Party Schedule   251 8960 36.24
14
16
10810 Its a Murder!   56 2404 22.16
16
16
377 Taxi   14 1245 28.48
13
16
106 Binary Stirling Numbers   3 2693 37.10
4
17
4103 Extend to Palindrome   44 2591 30.60
16
17
8728 Hierarchy   17 1817 29.84
10
17
16139 Naya Shatranj (New Chess)   10 1937 68.39
4
17
339 Recursive Sequence   79 3840 50.29
20
17
8238 N-Factorful   72 2795 26.82
18
17
15259 Large Knapsack   46 2293 26.11
17
17
6168 Building Bridges   27 1665 25.98
11
17
1021 Aibohphobia   310 10728 36.22
12
17
263 Period   57 3063 40.09
12
17
12933 n-divisors   60 2340 19.39
18
17
16211 Boring Factorials   34 1915 34.84
12
17
28308 Ada and Spring Cleaning   54 1608 20.76
18
17
9340 Arbitrage   37 1951 39.51
12
17

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