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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
2412 Arranging Amplifiers   18 3277 27.28
7
16
2413 Building Beacons   42 20.00
2414 Calculate The Cost   8 341 22.31
28
17
2415 Kirchhof Law   2 104 21.30
17
17
2416 Distinct Subsequences   94 3771 36.32
12
22
2417 Eliminate The Enemies   22 19.74
2418 Flying Frogs   62 35.38
2419 G-Line Grid   1 4 3.31
2420 Hospital at Hands   30 23.08
34
34
2421 Incrementing The Integer   1 53 24.37
17
50
2422 Jazzy Job   2 65 31.97
9
17
2423 Minimal Triangulations of Graphs   30 34.71
2426 Palindromes   9 1018 24.70
17
14
2450 Counting Rabbits   9 1230 34.24
10
12
2485 Phone Lines   19 14.19
2511 Magic Program IV   27 17.99
2525 Encoding   3 750 29.10
12
12
2526 Decoding   9 1040 36.50
23
15
2527 Flipping Burned Pancakes   3 264 52.50
17
17
2528 Monkey Vines   4 778 43.27
17
9
2529 Model Rocket Height   1 86 54.60
1
17
2530 Tiling a Grid With Dominoes   60 2434 64.89
16
24
2531 Spatial Concepts Test   1 74 66.12
17
34
2565 Another Permutation Problem   1 58 23.29
34
17
2631 Chomp   111 45.76
2643 Starcraft I   56 21.80
2648 Archiver   1 46 13.65
34
50
2649 Weird sorting   1 60 25.37
1
34
2658 Art of War   17 15.09
2660 Example   1 13 18.12
17
17
2661 Illumination   8 3.92
2662 Put a Point in a Hyperspace   18 9.65
2666 Query on a tree IV   4 735 13.54
38
34
2668 Polygon   1 67 20.30
26
34
2670 Count Minimum Spanning Trees   4 188 17.43
28
39
2678 Closest distance   1 166 13.78
28
34
2699 Recursive Sequence (Version II)   16 1009 26.09
26
24
2709 Untitled Problem   29 16.35
2713 Can you answer these queries IV   60 4295 17.63
21
21
2714 Cow Cars   6 669 37.51
15
17
2715 Glasnici   3 343 37.55
26
30
2716 Maximal Quadrilateral Area   -1 6254 50.22
3
8
2727 Army Strength   40 14561 41.23
4
4
2728 Breaking in   8 301 26.68
30
19
2731 Inventing Test Data   4 553 24.94
15
28
2733 K Equal Digits   15 13.38
2734 Large party   38 25.60
2735 Simplify the Railroad System   62 36.02
17
1
2737 Perfect Rhyme   5 435 16.98
27
26
2738 Number Guessing Game   42 4631 62.51
8
13

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