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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
35954 New Data Type   1 123 18.92
6
6
77 New bricks disorder   1 290 37.79
17
17
19561 New Binary   7 298 42.68
13
26
21640 Nested Palindromes   2 28 17.99
38
38
3943 Nested Dolls   31 1239 23.66
20
27
4035 NERED   2 395 57.76
9
13
31971 NEO   1 10 3.44
34
50
25818 NEKAMELEONI   16 11.40
11772 Negative Score   67 3451 34.17
10
11
7050 Necklace Decomposition   48 60.61
418 Necklace   47 17.18
32529 Nearest Neighbor Search   1 21 32.76
16139 Naya Shatranj (New Chess)   10 1937 68.39
4
17
18182 Naughty and Balls   3 361 41.69
6
17
7777 National Treasure   35 31.50
12243 Natalia Spins The Roulette   3 54 51.39
5
1
12245 Natalia Plays a Game   10 935 44.00
14
15
12244 Natalia Has Another Problem   6 115 47.52
17
14
34621 NARUTO AND HILLS   8 48 38.03
20
15
283 Naptime   676 26.45
17
1
16272 Nanoworld   1 42 31.11
17
17
31040 Namit In Trouble   21 869 23.79
14
14
3545 Najkraci   6 188 28.92
28
34
13799 Naive Loki   1 121 36.10
1
17
661 Nail Them   13 971 42.98
10
15
36266 Nahid The Reporter   3 18 31.03
1
1
16696 Nadal vs Djokovic   155 28.99
34
26
8505 Nacci Fear   6 320 40.37
24
21
32878 N..K..Divide   3 67 21.74
26
34
8238 N-Factorful   72 2796 26.82
18
17
12933 n-divisors   60 2340 19.39
18
17
6560 N DIV PHI_N (Hard)   4 168 21.34
17
28
6556 N DIV PHI_N   14 749 38.38
5
26
3922 Mystical River   128 25.67
5102 Mystic Craft   57 46.20
34549 Mysteriousness of a Logical Expression   7 66 10.93
28
23
12318 My Reaction when there is no internet connection   32 25.93
23
12
17821 My Name is UMMM!   2 32 22.16
17
9
14980 MVP   3 29 44.83
17
12
4459 Muzidabutur   34 26.62
196 Musketeers   2 510 30.46
17
34
2185 Musical Optimization   1 73 43.15
4557 Musical Chairs   23 2497 46.81
9
19
20984 Music Academy   2 73 48.24
1
9
34536 MultiSort   4 179 21.36
8
4
6709 Multiplying by Rotation   1 92 51.94
7960 Multiplicative Palindrome   34 27.78
4172 Multiplicative digital root   1 77 24.07
7299 Multiples of 3   121 3782 23.64
20
17
12240 Multinomial numbers   1 19 39.29
34
17

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