list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
3882 Cijevi   5 261 38.20
30
14
4198 Lego   5 195 25.35
24
22
4681 Twice   5 287 21.21
24
27
4988 Madrids One Way Streets   5 201 29.00
15
15
5240 Area of a Garden   5 1702 47.20
4
9
5465 Deliver pizza   5 408 22.98
21
15
5466 Electronic queue   5 166 38.11
13
21
5979 Yet Another Permutations Problem   5 1358 49.53
7
15
6988 Beer Machines   5 33 17.36
43
37
7002 Buildings   5 81 37.90
21
30
7019 Zig-Zag rabbit   5 596 36.47
22
19
7035 The Embarrassed Cryptographer   5 358 32.25
13
13
7210 Draw Mountains   5 337 44.33
17
6
7231 Homework   5 232 21.58
17
26
7232 Inversion Sort   5 173 16.34
32
23
7296 Trees Again   5 168 47.65
21
30
7363 Tree Sum   5 187 36.46
42
45
7380 Factorial challenge   5 344 31.49
14
26
7600 Milk Trading   5 186 30.71
1
28
7947 Almost square factorisation   5 123 52.29
8
11
7973 Sometimes, a penalty is good!   5 1207 29.59
6
8
8550 Longest Square Factor   5 75 18.47
21
37
8591 Prime Permutations   5 110 30.96
28
23
8786 The Longest Chain of Domino Tiles   5 297 31.93
21
21
9587 The Prime conjecture   5 574 34.49
9
9
9644 Imperialism   5 174 30.69
8
14
10270 Temperature   5 281 35.09
21
21
10466 Enough of analyzing, let’s play   5 262 45.78
17
23
10515 K12-Combinations   5 412 28.02
5
17
10547 Delivery Route   5 65 18.88
34
34
10570 Longest Common Substring   5 921 30.39
31
32
10802 Sum of Tetranacci numbers   5 318 38.94
27
21
10931 Online Bridge Searching   5 109 34.79
34
34
11103 PrimeFactorofLCM   5 600 25.72
17
17
11321 G-One Sort   5 782 37.62
13
17
11472 Amazing Maze   5 262 28.97
17
26
11477 Meeting For Party   5 490 28.25
17
12
12012 grace marks   5 229 22.97
21
21
12030 Blackout   5 376 44.48
20
15
12241 Classification from ErdÅ‘s and Selfridge   5 32 19.60
28
28
12304 Smallest Inverse Sum of Divisors   5 100 26.52
17
24
12714 Fatawy   5 148 25.64
14
4
12726 XOR Game   5 541 43.97
11
13
12746 Colorful Circle (EASY)   5 484 20.91
28
23
12943 Counting   5 82 46.93
8
30
13096 Amr Samir   5 921 31.21
9
10
13105 DNA   5 692 33.58
11
24
13405 MayanCalendar   5 125 55.48
8
8
13529 Special Graph   5 83 12.43
36
31
13838 Mosty! Find Gn   5 564 49.87
9
24

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