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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
19276 Peculiar Permutivores   6 36.36
10112 Peer Review   116 32.79
12721 Pell (Mid pelling)   1 45 33.83
23185 Pencil Game   1 24 28.44
17
17
8612 Penney Game   38 7743 67.22
4
3
867 Perfect Cubes   11 2243 47.88
7
5
8286 Perfect Matching   92 19.19
1
17
9190 Perfect Maze   31 1.73
25475 Perfect packing   3 15 51.24
34
39
2737 Perfect Rhyme   5 437 16.99
27
26
9260 Perfect Road   16 20.37
17
17
26182 Perfect Superstring   2 14 69.57
34
34
7249 Perfume   2 115 16.00
1
17
263 Period   57 3063 40.09
12
17
22269 Periodic function, trip 1   1 19 29.33
17
50
22270 Periodic function, trip 2   3 38 44.65
23
28
22271 Periodic function, trip 3   13 52.07
34
17
22315 Periodic function, trip 3 (easy)   16 25.71
17
17
27213 Periodic function, trip 5   11 55.58
10081 Periodic Points   12 35.90
3734 Periodni   2 669 39.16
26
34
1712 Permalex   -1 174 19.50
23
17
37114 PermRLE   4 15 28.33
27
37
4310 Permutacja   4 170 38.96
12
17
3373 Permutation Code   43 56.10
3166 Permutation Exponentiation   36 14.93
8427 Permutation Game   34 40.38
479 Permutation generator   1 135 28.24
21
17
14819 Permutation Generator   37 30.29
5831 Permutation Jumping   137 59.48
64 Permutations   98 4413 52.19
12
20
15851 Permutations   1 18 32.93
17
17
37476 Personal LCM   4 45 13.46
21
30
15310 Peter Quest   1 178 49.05
17
17
18284 Petya and the Road Repairs   60 892 24.02
19
22
24957 Petya Brother and Repairment of Roads   9 177 28.28
24
24
38389 Phasmophobia   5 30 31.58
39
39
13816 Pheversos Game   1 8 36.03
17
34
365 Phidias   25 1226 47.23
13
21
3923 Philosophers Stone   310 12869 43.54
10
11
2485 Phone Lines   19 14.19
4033 Phone List   151 7336 31.82
16
14
134 Phony Primes   1 183 19.22
23
23
2138 Pibonacci   3 48 14.11
26
39
6691 Picking Up Chicks   29 2262 32.15
11
18
1837 Pie   60 4131 30.45
18
15
9890 Piece it together   97 24.14
41128 Pierwiastkowanie   4 40 39.50
5
13
21332 Pigeonhole Tower   7 1755 35.68
4
6
39 Piggy-Bank   140 8250 35.53
14
16

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