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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
30691 Ada and Diary   3 63 17.90
9
9
1335 Maze   67 17.90
17
17
9124 Sightseeing   120 17.92
16825 Divisors   6 93 17.93
20
24
13091 Snakes and Ladders   3 113 17.95
21
11
16267 Real Numbers   2 172 17.97
26
26
2660 Example   1 13 17.99
17
17
2511 Magic Program IV   27 17.99
21640 Nested Palindromes   2 28 17.99
38
38
1454 Memory Distribution   27 18.00
34
17
10449 Resource Management   15 18.00
34551 Stopping-off Cities   6 73 18.01
26
23
4828 ZSequence   53 18.02
7103 Edit Distance   1 74 18.02
17
17
4421 Irreducible polynomials over GF2   64 18.04
9636 A Canvas Building   71 18.04
17
17
30973 Ada and Tomato   4 64 18.05
30
34
7337 Shuffling   24 18.09
25477 Generating alien DNA II   2 35 18.09
17
17
36134 Ono at the river 1   1 15 18.11
17
17
229 Sorting is easy   1 118 18.11
17
1
5652 Snow White and the N dwarfs   32 1031 18.12
21
31
36674 PIZZA   4 495 18.13
1
13
11789 Aliens at the subway   2 78 18.13
23
23
6773 Dinostratus Numbers   1 95 18.13
17
17
2060 Tough Water Level   36 18.21
11355 SQUARE TO SQUARE   23 18.22
22274 Missing Side   1 94 18.25
17
9
23541 CWC-2015   8 152 18.25
17
17
413 Word Puzzles   4 377 18.26
30
14
4569 Let go to the movies   -3 161 18.26
50
34
14542 Pythagorean triples (medium)   3 141 18.27
17
28
16580 Query on a tree VII   2 282 18.27
42
42
3643 Traffic Network   89 2120 18.30
18
21
8734 Charlie and the Chocolate Factory   1 46 18.31
26
34
37226 Recursive Sequence (Version III)   4 11 18.31
34
34
8546 Manoj and Pankaj   51 18.32
25480 Invading aliens   19 18.35
6956 IOI2009 Mecho   3 167 18.36
28
23
8651 Alien arithmetic   1 45 18.37
21861 I Love Strings   3 57 18.37
23
23
15076 A Romantic Movie Outing   27 18.39
1812 Longest Common Substring II   16 2102 18.40
30
28
34864 Large Sum   8 236 18.39
12
12
3644 Winning Strategy   1 35 18.40
17
50
5511 Heavy Sequences   -1 84 18.41
34
34
34910 Easy Math   2 620 18.42
2
4
1715 Another Necklace Problem   52 18.42
17
17
27341 Jumping Joey   1 6 18.42
34
17
1966 Ski Valley   117 18.43

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