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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
839 Optimal Marks   8 822 24.44
25
34
1453 Optimal Connected Subset   148 45.94
26
42
19301 Operators (new ver)   3 40 6.54
38
17
19274 Operators   17 589 20.19
14
20
17309 Operation Bits   1 412 57.86
11
11
7934 Operating System Problems (Task Scheduling)   2 138 56.50
17
17
7742 Onotole needs your help   138 10086 41.04
4
11
36134 Ono at the river 1   1 16 19.69
17
17
10931 Online Bridge Searching   4 92 35.22
34
34
370 Ones and zeros   149 4462 30.03
19
22
13588 One X LIS   2 63 20.83
17
17
10465 One Theorem, One Year   45 42.08
28600 One Punch Man   4 68 35.96
17
17
23492 One piece   4 95 34.07
17
30
25728 One of the Simpsons symbols   2 277 66.59
5
13
27308 One more weird game   10 395 55.01
3
8
2023 One Instruction Computer Simulator   41 11.22
42
42
15091 One Good Base Deserves Another   3 57.14
34
1
2901 One Geometry Problem   9 1814 36.10
4
13
36423 One Eight_Nine   3 194 36.17
3
9
23516 One day with string   10 234 35.99
7
10
1465 On the Way to Find Chris   2 57 15.22
26
26
16275 On the side of the road   2 84 21.79
34
26
15631 On the Plus Side   4 37 29.55
12
17
8820 Okret   3 40 19.32
39
34
3007 Oil Company   3 178 25.08
23
28
27098 Oil   1 80 25.94
17
34
1697 Ohgas' Fortune   4 706 64.40
9
4
21394 Ohani And The Series   4 598 42.05
17
17
25214 Ohani And The Game   77 19.89
11
8
21395 Ohani And Binary Search Tree   -1 127 36.31
50
17
23737 Ogledala   1 21 38.04
34
17
293 Officers on the Beat   11 21.43
18469 Office Mates   1 51 31.70
17
34
3107 Odd Numbers of Divisors   27 1046 18.26
22
22
6977 Odd Independent Sets   13 55.56
10820 Obsession   4 32 23.98
39
39
6172 OAE   7 1159 41.30
12
26
19297 Nymphs from H10   27 31.37
94 Numeral System of the Maya   4 2581 40.51
10
6
1699 Numeral System   13 2217 67.16
6
3
11202 Number Theory   32 31.12
39
39
1112 Number Steps   84 33876 43.16
4
4
27317 Number of score sequences   8 79 46.67
14
19
411 Number of quite different words   4 238 33.43
17
27
8277 Number of Prime Strings   3 91 18.95
23
28
7586 Number of Palindromes   9 1329 46.25
13
13
7718 Number of common divisors   86 6932 24.80
12
13
27313 Number of Binary Trees   5 72 44.39
6
17
15996 Number Magic II   23 28.35
26
17

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