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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
5699 The last digit re-visited   39 7436 31.67
9
9
8551 Colours A, B, C, D   39 2152 21.20
10
21
8612 Penney Game   39 7621 67.55
4
3
12474 MAXIMUM WOOD CUTTER   39 1550 41.83
15
14
15454 How to Handle the Fans   39 1505 50.26
12
11
23132 Travelling cost   39 1593 32.99
10
8
66 Cross-country   38 4051 64.55
11
12
709 The day of the competitors   38 1545 28.99
17
27
2727 Army Strength   38 14469 41.25
4
4
7212 Find String Roots   38 2140 34.83
12
15
7406 Beehive Numbers   38 9163 58.86
5
9
7804 Defense of a Kingdom   38 4806 25.34
10
12
12880 Sheep   38 1751 44.42
10
10
25893 Longest Perfect Increasing Subsequence   38 679 39.29
8
12
26 Build the Fence   37 2196 28.32
22
17
151 The Courier   37 1030 35.84
22
23
338 Roads   37 1377 23.84
17
22
526 Divisors   37 1680 43.56
14
13
1847 No Change   37 1671 36.23
11
14
2053 Key Task   37 1171 31.67
24
22
3261 Race Against Time   37 1035 23.74
21
21
4408 Build a Fence   37 12215 44.79
4
5
11373 Coke madness   37 3798 34.87
5
8
14138 Amazing Factor Sequence   37 2314 37.02
11
11
15086 Land Acquisition   37 1291 28.25
24
30
8952 Catapult that ball   36 2742 26.27
12
12
10239 Between the Mountains   36 5772 39.10
7
7
10790 G-One Numbers   36 2043 48.34
16
19
32945 Ada and Subsequence   36 1005 46.65
7
8
6171 Majority   35 5307 43.13
6
7
9340 Arbitrage   35 1763 39.06
11
17
10738 Ra-One Numbers   35 1513 33.93
18
22
10381 Search in the dictionary!   34 1354 25.88
17
11
14834 Foxlings   34 1053 28.92
18
12
16211 Boring Factorials   34 1861 34.67
12
17
22455 SUM OF PRODUCT   34 1038 17.90
18
20
24998 PLAYING WITH BITS   34 772 22.14
13
13
26607 CODER FIRST PROBLEM   34 1338 57.18
6
7
30669 Ada and Trip   34 844 30.24
14
11
1811 Longest Common Substring   33 3034 21.18
20
18
4259 Pilots   33 1590 31.74
17
20
5977 Weird Function   33 1134 18.84
18
16
8132 Street Trees   33 3071 46.96
6
11
13043 The Mirror of Galadriel   33 5902 64.48
2
3
13630 BATMAN1   33 585 38.74
20
22
22461 Smallest Number   33 745 26.88
14
15
28404 Ada and Field   33 547 25.77
21
17
666 Con-Junctions   32 980 40.57
14
19
13015 Counting Primes   32 1302 21.62
16
14
18164 Atoms in the Lab   32 3795 25.73
8
5

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