list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
15849 Find the Treasure   10 575 23.28
13
10
23842 Professor Farouk Question   17 575 33.48
10
7
18408 The Valentine Confession   9 572 28.24
15
21
4180 Pizza Location   2 571 18.49
31
17
9587 The Prime conjecture   5 569 34.34
9
9
15620 Postering   14 567 32.15
17
21
8184 Bureaucracy   2 565 29.64
6
17
13990 Web islands   18 565 33.14
15
16
16245 Living with Courage   19 565 37.37
10
13
245 Square Root   4 564 13.04
20
10
962 Intergalactic Map   2 563 23.39
19
28
18056 Robert Langdon & Cipher   2 563 50.46
1
13
1713 Funny scales   12 560 30.45
17
16
688 Toy Cars   1 556 17.68
9
17
1723 Bee Maja   3 556 53.47
17
21
13838 Mosty! Find Gn   5 556 49.54
9
24
967 Parking Bay   3 551 49.17
12
23
4941 Integer Factorization (20 digits)   8 550 55.87
34
30
9577 Dynamic Tree Connectivity   12 549 27.92
29
28
27321 Increasing numbers   17 549 23.72
13
19
11103 PrimeFactorofLCM   5 548 25.50
17
17
28404 Ada and Field   33 547 25.72
21
17
8139 Chairs   8 545 37.67
12
20
1183 Accomodate the palace   4 543 52.35
17
34
28604 Sinha and Eggs   6 542 37.10
5
10
4987 Goal for Raúl   6 541 29.89
12
12
7191 Hexagonal Board   6 540 62.07
12
9
36 Secret Code   6 538 36.68
17
17
15431 Farmer Cream   3 536 53.53
1
6
18297 Problem4   24 536 32.17
18
20
676 Sorting is not easy   9 535 39.62
19
32
7976 Sum the Square   7 534 25.79
12
15
14844 All Your Base   12 534 29.91
11
11
12462 Boggle Scoring   7 533 47.76
5
5
1440 Use of Function Arctan   4 532 29.04
5
26
12726 XOR Game   5 532 43.87
11
13
7264 Digital LED Number   7 531 28.81
14
4
12400 Johnnys Empire   1 531 43.20
9
9
371 Boxes   530 35.64
1
26
24191 Eagle and Dogs   18 530 17.63
21
28
1487 Query on a tree III   529 17.24
1825 Free tour II   1 529 14.07
17
34
3394 Lagrange’s Four-Square Theorem   4 527 45.84
1
9
1024 Complete Chess Boards   2 526 54.60
17
20
4480 Chaos Strings   14 526 29.97
17
22
21692 CURD PRODUCERS   6 521 42.01
15
11
3763 George   15 520 52.54
19
18
3924 Filchs Dilemna   7 520 65.45
9
17
24999 1807   10 519 38.42
15
18
32943 Ada and Unstable Sort   9 519 41.60
5
9

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