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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
178 Road net   11 2364 49.56
9
8
10810 Its a Murder!   55 2363 22.04
16
17
16121 MODIFY SEQUENCE   26 2350 48.32
6
7
1798 Assistance Required   14 2339 45.28
16
7
10395 Sum of divisors!   25 2338 27.03
16
18
4103 Extend to Palindrome   40 2334 29.61
16
17
1162 Tic-Tac-Toe ( II )   6 2319 30.40
17
9
10628 Count on a tree   62 2319 17.00
32
31
14138 Amazing Factor Sequence   37 2317 37.04
11
11
101 Fishmonger   47 2290 38.08
17
20
12933 n-divisors   59 2288 19.28
18
17
11402 The Indian Connection   19 2286 36.20
8
14
11175 The Ball Game   14 2277 44.17
2
11
9034 Help Tohu   12 2275 45.20
5
23
2884 Martian Mining   87 2269 47.77
13
22
138 Election Posters   65 2264 25.61
20
21
28306 Ada and Queue   28 2261 25.65
11
9
203 Potholers   22 2258 26.47
16
12
364 Pocket Money   53 2236 38.52
15
18
9493 Advanced Fruits   92 2229 37.44
19
16
15259 Large Knapsack   46 2229 25.90
17
17
7190 Guess the Number   14 2216 33.32
4
9
11372 Blueberries   62 2215 33.53
12
13
1699 Numeral System   13 2214 67.15
6
3
26 Build the Fence   37 2206 28.19
22
17
348 Expedition   58 2195 20.46
20
20
6691 Picking Up Chicks   29 2190 32.14
11
18
1108 Card Trick   68 2179 50.34
21
24
867 Perfect Cubes   11 2168 47.60
7
5
4556 Think I will Buy Me a Football Team   30 2167 44.99
7
11
9637 Black and White   12 2163 54.07
4
5
8551 Colours A, B, C, D   39 2152 21.20
10
21
2815 Increasing Subsequences   52 2146 28.13
14
22
11736 Prime Time   25 2146 48.42
11
12
13388 Easy Jug   24 2142 41.98
6
15
7212 Find String Roots   38 2141 34.83
12
15
1846 Project File Dependencies   24 2138 41.06
14
15
12151 Pizzamania   28 2133 28.25
5
4
16482 Make them equal !   22 2105 52.91
3
9
7430 Tower Of Hanoi - Revisited   13 2098 51.45
8
14
13381 Manku Word   31 2097 46.96
13
15
3643 Traffic Network   89 2091 18.29
18
21
27307 Alternating Sequences   62 2091 32.46
8
9
7217 Training for final   26 2089 45.47
8
6
10790 G-One Numbers   36 2068 48.31
16
19
726 Promotion   24 2064 28.18
12
8
4164 A conjecture of Paul ErdÅ‘s   23 2059 44.59
16
14
7258 Lexicographical Substring Search   28 2050 21.69
23
19
2881 Find the Clones   17 2037 44.43
9
7
15436 Slick   52 2036 33.19
9
9

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