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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
2816 Common Subsequences   5 217 28.61
26
34
7783 Commuting Functions   44 25.22
25176 Compare Substring   4 131 43.09
9
9
10082 Comparing Answers   57 12.59
9382 Complan Carnival   34 35.77
1024 Complete Chess Boards   2 525 54.56
17
20
8 Complete the Sequence!   32 4368 37.91
16
18
8843 Complete the Set   1 52 32.71
1
17
19292 Complicated Calculations   93 51.44
1
1
10 Complicated Expressions   11 1538 32.19
16
16
5153 Compressed String   41 30.62
25473 CompuTenis reloaded   3 240 34.91
4
4
4008 Con Voi   7 62.50
666 Con-Junctions   32 980 40.57
14
19
10399 Conga line   -1 356 35.75
9
9
28460 Congratulations, Fidel!   1 38 14.33
17
17
3006 Connect Line Segments   1 75 25.59
17
17
4361 Connected Points   9 52.17
9459 Connecting three towns (variation)   1 52 25.50
17
34
262 Connections   1 111 28.84
34
34
35669 Consecutive Letters   8 433 27.26
16
19
6650 Consecutive sequence   4 320 45.05
20
17
21170 Constellation of the parallelogram   1 89 26.31
17
17
9936 Construct the Great Wall   9 41.67
17707 Constructible Regular Polygons   5 499 55.61
8
8
260 Containers   3 290 45.97
17
14
10447 Contaminated City   69 13.63
13398 Contest Hall Preparation   1 336 43.25
15
12
996 Continuous Fractions   1 274 37.37
17
17
1285 Continuous Fractions Again   5 368 41.98
17
12
3970 Convert to Decimal Base System   53 40.29
17
17
236 Converting number formats   149 42.62
1
1
760 Convex Hull 3D   117 41.56
3897 Convex Polygons   2 119 30.29
17
34
7023 Cookies   19 36.36
1875 Cool Numbers   6 164 30.42
30
34
22532 Cool Problem   1 16 57.14
1
17
17624 Cooperation in geometry !   20 11.79
15566 Coprime Again   7 66 26.42
27
34
18165 Coprime Pairs   13 25.68
43 Copying Books   45 2721 25.54
19
19
3078 Copying DNA   44 23.53
26314 Corn Headache   7 354 35.86
8
9
264 Corporative Network   14 587 24.84
17
19
28457 Correlations   5 91 29.44
9
13
8980 Cost   46 1145 29.57
19
26
8363 COSTLY CHESS   23 1456 43.88
14
12
27303 Count Doubles   3 618 34.45
7
5
374 Count maximum matrices   234 20.82
1
17
2670 Count Minimum Spanning Trees   4 175 17.17
28
39

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