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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
3486 Elimination   67 28.48
4142 Ellipse   17 8.46
25178 Elegant Permuted Sum   8 136 35.32
14
21
8263 Big Pyramid   3 45 59.76
23
23
2175 Emoticons   3 328 21.95
23
28
367 Empodia   2 160 27.56
17
26
199 Empty Cuboids   -1 142 34.74
18714 Can You Make It Empty 2   15 1319 29.17
8
11
21284 Can You Make It Empty 3   6 94 31.09
15
20
964 Entrapment   6 337 23.94
17
24
16956 Encoded Coordinates   1 19 33.33
17
34
1787 Run Length Encoding   7 857 19.62
15
4
10587 Enemies   35 34.07
2417 Eliminate The Enemies   22 26.79
15965 PLAY WITH MATH   60 6863 46.43
4
5
8334 Enumeration of rationals   2 86 17.18
7693 Environmental Engineering   11 23.95
336 Exchange Operations   1 85 19.74
1
17
1701 Earth Observation with a Mobile Robot Team   9 37.04
4103 Extend to Palindrome   40 2412 29.86
16
17
13007 Easy Programming Tutorials   2 278 30.41
17
17
1877 Enrich my purse   152 27.14
5466 Electronic queue   4 157 37.04
13
21
11575 A Famous Equation   2 73 27.13
34
34
35 Equipment Box   6 1312 14.56
8
21
1000 Equidivisions   -1 644 23.37
13
13
1739 Yet Another Equation   223 40.79
9640 Equilibrium   3 249 28.16
9
9
23153 Equivalent Passwords   9 72 36.19
21
14
35301 Evaluate Escape Character   7 18 42.98
9
17
7422 Escape from Jail Again   7 436 42.16
30
32
7188 Escape from Jail   12 618 30.90
18
23
25962 Essay   5 67 32.19
10
17
16809 Estimation   2 137 8.70
30
17
4141 Euler Totient Function   145 11645 38.63
8
11
22382 Euler Totient Function Depth   24 382 36.63
15
16
22268 Euler Totient Function Sieve   28 378 18.89
23
20
383 European railroad tracks   222 30.09
27493 Even Frequency   7 70 29.55
21
30
34380 Even Semiprime Runs   4 22 63.74
28
28
4324 The fate of the pineapple   40 28.41
2660 Example   1 12 21.43
17
17
1726 Exchange   18 6.52
109 Exchanges   1 126 45.35
34
10576 Exclusive Security   -1 96 26.06
26916 Extremely Lagged Fibonacci   3 25 33.33
34
34
702 Barn Expansion   152 23.28
1
17
348 Expedition   58 2217 20.51
20
20
6296 Experiment   26 20.39
1674 The Explosion   152 26.35

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