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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
13799 Naive Loki   1 121 36.10
1
17
3545 Najkraci   6 188 28.92
28
34
31040 Namit In Trouble   21 869 23.79
14
14
16272 Nanoworld   1 42 31.11
17
17
283 Naptime   676 26.45
17
1
34621 NARUTO AND HILLS   8 48 38.03
20
15
12244 Natalia Has Another Problem   6 115 47.52
17
14
12245 Natalia Plays a Game   10 936 44.00
14
15
12243 Natalia Spins The Roulette   3 54 51.39
5
1
7777 National Treasure   35 31.50
18182 Naughty and Balls   3 361 41.69
6
17
16139 Naya Shatranj (New Chess)   10 1937 68.39
4
17
32529 Nearest Neighbor Search   1 21 32.65
418 Necklace   47 17.18
7050 Necklace Decomposition   48 60.61
11772 Negative Score   67 3451 34.17
10
11
25818 NEKAMELEONI   16 11.40
31971 NEO   1 10 3.44
34
50
4035 NERED   2 395 57.76
9
13
3943 Nested Dolls   31 1239 23.66
20
27
21640 Nested Palindromes   2 28 17.99
38
38
19561 New Binary   7 298 42.68
13
26
77 New bricks disorder   1 290 37.79
17
17
35954 New Data Type   1 123 18.92
6
6
705 New Distinct Substrings   42 3898 26.83
26
25
7602 New Game with a Chess Piece   4 231 31.37
17
34
9434 New Horizons   11 31.75
25383 New Lottery Game   7 50 19.67
17
15
13090 New Strategy   3 145 33.53
9
9
28462 New TAP   1 40 34.18
17
17
18102 New year love story   2 83 26.67
34
34
13055 New Year Train   1 60 56.97
1
17
25959 Next Lexicographically Greater Substring   5 49 22.46
26
26
34622 NICE SEQUENCES   17 165 50.66
11
13
13384 Nice Binary Trees   26 1840 39.88
9
13
6738 Nice Quadrangles   180 40.97
15554 Niceness of the string   12 1170 36.63
7
2
9219 Nikhil Problem   2 225 45.88
17
17
8624 Nim-B Sum   -1 631 61.46
9
17
11458 Ninja   125 15.62
12866 Nlogonian Tickets   12 333 20.93
25
24
1847 No Change   37 1684 36.16
11
14
26778 NO GCD   11 105 22.58
29
38
8496 No Squares Numbers   18 845 35.10
19
15
9975 No Stories Any More!   1 48 30.28
34
34
35281 Noel and His Reindeer   6 32 35.43
20
14
30945 Non Coprime Sequences   2 22 20.43
50
50
30961 Non Coprime Sequences(Hard)   4 17 7.32
34
34
8611 Non-Decreasing Digits   71 3733 54.84
7
11
8283 Non-Decreasing Numbers   2 31 20.49
50
50

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