list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
2143 Dependency Problems   4 519 38.94
17
13
8093 Sevenk Love Oimaster   1 519 23.48
26
26
6477 Bowling   3 521 28.59
8
11
3763 George   15 522 52.29
19
18
24999 1807   10 522 38.53
15
18
3924 Filchs Dilemna   7 524 65.40
9
17
28740 Try to complete   21 524 25.75
23
23
4480 Chaos Strings   14 529 30.04
17
22
21692 CURD PRODUCERS   6 529 42.14
15
11
1024 Complete Chess Boards   2 530 54.75
17
20
3394 Lagrange’s Four-Square Theorem   4 531 46.10
1
9
1440 Use of Function Arctan   4 533 29.01
5
26
15560 Help the old King   15 534 37.36
15
15
21360 Suffix Equal Prefix   5 534 29.20
13
13
12726 XOR Game   5 536 43.81
11
13
15431 Farmer Cream   3 536 53.45
1
6
18297 Problem4   24 536 32.29
18
20
12400 Johnnys Empire   1 537 43.45
9
9
12462 Boggle Scoring   7 537 47.96
5
5
14844 All Your Base   12 537 30.00
11
11
14887 Good Travels   29 537 29.04
26
24
676 Sorting is not easy   9 538 39.70
19
32
7264 Digital LED Number   7 538 28.81
14
4
7191 Hexagonal Board   6 541 62.11
12
9
371 Boxes   543 35.84
1
26
4987 Goal for Raúl   6 543 29.99
12
12
36 Secret Code   6 546 35.96
17
17
28604 Sinha and Eggs   6 547 37.23
5
10
1183 Accomodate the palace   4 548 52.46
17
34
5271 A Coin Game   4 548 31.81
21
30
8139 Chairs   8 550 37.68
12
20
12005 Grass Planting   11 550 44.96
29
19
32943 Ada and Unstable Sort   9 552 40.88
5
9
7976 Sum the Square   7 554 26.14
12
15
7826 Tree Isomorphism   8 555 22.99
19
28
27321 Increasing numbers   17 555 23.61
13
19
1825 Free tour II   1 556 14.23
17
34
1723 Bee Maja   3 558 53.42
17
21
13838 Mosty! Find Gn   5 558 49.64
9
24
1487 Query on a tree III   559 17.77
967 Parking Bay   3 560 48.99
12
23
1713 Funny scales   12 560 30.45
17
16
28404 Ada and Field   33 560 25.45
21
17
18056 Robert Langdon & Cipher   2 563 50.46
1
13
962 Intergalactic Map   2 564 23.38
19
28
8184 Bureaucracy   2 565 29.64
6
17
16245 Living with Courage   20 569 37.43
10
13
9587 The Prime conjecture   5 571 34.40
9
9
15637 Mr Youngs Picture Permutations   1 571 39.41
17
17
4941 Integer Factorization (20 digits)   8 572 55.56
34
30

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