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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
10810 Its a Murder!   55 2367 22.03
16
17
178 Road net   11 2366 49.56
9
8
16121 MODIFY SEQUENCE   26 2352 48.31
6
7
10628 Count on a tree   62 2348 17.02
32
31
4103 Extend to Palindrome   40 2343 29.63
16
17
1798 Assistance Required   14 2341 45.23
16
7
10395 Sum of divisors!   25 2339 27.01
16
18
1162 Tic-Tac-Toe ( II )   6 2328 30.35
17
9
14138 Amazing Factor Sequence   37 2320 37.05
11
11
101 Fishmonger   47 2293 38.08
17
20
12933 n-divisors   59 2290 19.29
18
17
11402 The Indian Connection   19 2287 36.20
8
14
28306 Ada and Queue   28 2279 25.65
11
9
11175 The Ball Game   14 2277 44.16
2
11
9034 Help Tohu   12 2276 45.20
5
23
2884 Martian Mining   87 2272 47.79
13
22
138 Election Posters   65 2268 25.62
20
21
203 Potholers   22 2259 26.46
16
12
364 Pocket Money   53 2237 38.52
15
18
15259 Large Knapsack   46 2235 25.91
17
17
9493 Advanced Fruits   92 2230 37.42
19
16
1699 Numeral System   13 2216 67.16
6
3
7190 Guess the Number   14 2216 33.31
4
9
11372 Blueberries   62 2216 33.53
12
13
26 Build the Fence   37 2214 28.15
22
17
348 Expedition   58 2197 20.43
20
20
6691 Picking Up Chicks   29 2197 32.15
11
18
1108 Card Trick   68 2185 50.38
21
24
867 Perfect Cubes   11 2171 47.59
7
5
4556 Think I will Buy Me a Football Team   30 2167 44.99
7
11
9637 Black and White   12 2164 54.08
4
5
8551 Colours A, B, C, D   39 2157 21.20
10
21
2815 Increasing Subsequences   52 2147 28.14
14
22
11736 Prime Time   25 2147 48.43
11
12
7212 Find String Roots   38 2145 34.84
12
15
13388 Easy Jug   24 2143 41.99
6
15
1846 Project File Dependencies   24 2138 41.04
14
15
12151 Pizzamania   28 2135 28.26
5
4
4164 A conjecture of Paul ErdÅ‘s   23 2113 44.49
16
14
16482 Make them equal !   22 2105 52.91
3
9
10790 G-One Numbers   36 2102 48.27
16
19
7430 Tower Of Hanoi - Revisited   13 2101 51.35
8
14
13381 Manku Word   31 2097 46.96
13
15
27307 Alternating Sequences   62 2094 32.45
8
9
3643 Traffic Network   89 2092 18.30
18
21
7217 Training for final   26 2089 45.47
8
6
726 Promotion   24 2066 28.16
12
8
7258 Lexicographical Substring Search   29 2060 21.73
23
19
15436 Slick   52 2047 33.07
9
9
2881 Find the Clones   17 2037 44.43
9
7

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