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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
3002 Electrophoretic   15 20.93
9655 Elevator Trouble   96 4335 32.41
11
11
3486 Elimination   75 30.31
4142 Ellipse   21 9.46
25178 Elegant Permuted Sum   8 139 35.67
14
21
8263 Big Pyramid   3 51 62.92
23
23
2175 Emoticons   3 332 22.00
23
28
367 Empodia   2 165 27.51
17
26
199 Empty Cuboids   -1 149 35.55
18714 Can You Make It Empty 2   15 1324 29.23
8
11
21284 Can You Make It Empty 3   6 95 31.16
15
20
964 Entrapment   6 340 23.99
17
24
16956 Encoded Coordinates   1 27 33.02
17
34
1787 Run Length Encoding   7 861 19.62
13
3
10587 Enemies   43 37.50
2417 Eliminate The Enemies   22 19.74
15965 PLAY WITH MATH   60 6904 46.49
4
5
8334 Enumeration of rationals   2 92 17.28
7693 Environmental Engineering   38 39.23
336 Exchange Operations   1 90 20.00
1
17
1701 Earth Observation with a Mobile Robot Team   14 40.54
4103 Extend to Palindrome   44 2591 30.60
16
17
13007 Easy Programming Tutorials   2 281 30.58
17
17
1877 Enrich my purse   153 27.01
5466 Electronic queue   5 166 38.11
13
21
11575 A Famous Equation   2 81 27.32
34
34
35 Equipment Box   6 1329 14.46
8
21
1000 Equidivisions   -1 654 23.39
13
13
1739 Yet Another Equation   237 41.51
9640 Equilibrium   3 256 28.14
9
9
23153 Equivalent Passwords   9 77 36.16
21
14
35301 Evaluate Escape Character   7 21 41.91
9
17
7422 Escape from Jail Again   7 460 42.40
30
32
7188 Escape from Jail   12 629 30.98
18
23
25962 Essay   5 71 32.78
10
17
16809 Estimation   2 174 10.09
30
17
4141 Euler Totient Function   147 12042 39.03
8
11
22382 Euler Totient Function Depth   24 398 37.13
15
16
22268 Euler Totient Function Sieve   29 409 19.57
23
21
383 European railroad tracks   227 30.31
27493 Even Frequency   7 72 29.59
21
30
34380 Even Semiprime Runs   4 27 63.45
28
28
4324 The fate of the pineapple   46 28.98
2660 Example   1 13 17.99
17
17
1726 Exchange   24 7.92
50
34
109 Exchanges   1 130 43.31
34
10576 Exclusive Security   -1 99 26.77
26916 Extremely Lagged Fibonacci   3 31 33.91
34
34
702 Barn Expansion   157 23.54
1
17
348 Expedition   58 2265 20.73
20
20

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