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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
2412 Arranging Amplifiers   18 3267 27.32
7
16
2413 Building Beacons   41 22.68
2414 Calculate The Cost   8 339 22.26
28
17
2415 Kirchhof Law   2 102 21.16
17
17
2416 Distinct Subsequences   94 3758 36.27
12
22
2417 Eliminate The Enemies   22 20.98
2418 Flying Frogs   61 35.05
2419 G-Line Grid   1 4 4.04
2420 Hospital at Hands   28 22.84
34
34
2421 Incrementing The Integer   1 50 23.21
17
50
2422 Jazzy Job   2 65 31.97
9
17
2423 Minimal Triangulations of Graphs   28 34.55
2426 Palindromes   9 1016 24.70
17
14
2450 Counting Rabbits   9 1229 34.17
10
12
2485 Phone Lines   19 14.47
2511 Magic Program IV   27 17.99
2525 Encoding   3 749 29.10
12
12
2526 Decoding   9 1039 36.39
23
15
2527 Flipping Burned Pancakes   3 259 52.46
17
17
2528 Monkey Vines   4 777 43.32
17
9
2529 Model Rocket Height   1 86 54.60
1
17
2530 Tiling a Grid With Dominoes   60 2429 64.84
16
24
2531 Spatial Concepts Test   1 74 66.12
17
34
2565 Another Permutation Problem   1 55 23.08
34
17
2631 Chomp   111 45.76
2643 Starcraft I   54 21.39
2648 Archiver   1 44 13.35
34
50
2649 Weird sorting   1 59 25.09
1
34
2658 Art of War   17 17.52
2660 Example   1 12 19.83
17
17
2661 Illumination   8 3.93
2662 Put a Point in a Hyperspace   17 9.56
2666 Query on a tree IV   4 726 13.55
38
34
2668 Polygon   1 65 20.16
26
34
2670 Count Minimum Spanning Trees   4 188 17.43
28
39
2678 Closest distance   1 164 13.72
28
34
2699 Recursive Sequence (Version II)   16 1008 26.11
26
24
2709 Untitled Problem   29 16.35
2713 Can you answer these queries IV   60 4239 17.60
21
21
2714 Cow Cars   6 667 37.49
15
17
2715 Glasnici   3 338 37.37
26
30
2716 Maximal Quadrilateral Area   -1 6252 50.21
3
8
2727 Army Strength   40 14550 41.23
4
4
2728 Breaking in   8 297 26.77
30
19
2731 Inventing Test Data   4 499 25.66
15
28
2733 K Equal Digits   12 12.30
2734 Large party   36 24.62
2735 Simplify the Railroad System   59 36.73
17
1
2737 Perfect Rhyme   5 393 17.27
27
26
2738 Number Guessing Game   42 4630 62.52
8
13

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