list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1112 Number Steps   84 33930 43.13
4
4
328 Bishops   83 8952 31.99
14
7
5971 LCM Sum   81 3750 25.97
20
29
21524 Pattern Find   81 4739 38.22
10
13
154 Sweet and Sour Rock   80 3421 51.26
14
17
3871 GCD Extreme   80 2818 29.63
19
26
21357 Crucial Equation   80 6251 38.11
4
9
91 Two squares or not two squares   79 6043 24.61
11
14
3405 Almost Shortest Path   79 1671 31.55
22
21
10509 Cards   78 13478 34.01
4
4
2939 Query on a tree V   77 1821 28.29
29
30
3381 Highways   77 4415 38.01
10
9
339 Recursive Sequence   76 3723 50.10
20
17
5117 Wine trading in Gergovia   76 5374 33.80
9
12
9494 Just Add It   76 6312 47.79
11
10
18167 SubXor   75 1754 30.55
25
29
247 Chocolate   74 5862 43.59
10
18
3749 Subset Sums   74 4097 26.42
17
20
6294 Yodaness Level   74 3548 49.29
15
16
12150 Just Next !!!   74 6601 23.04
12
11
288 Prime or Not   73 5160 18.99
21
22
10394 Buying Apples!   72 5517 34.82
12
14
379 Ambiguous Permutations   71 12343 59.58
4
5
8611 Non-Decreasing Digits   71 3720 54.78
7
11
22403 Divisors of factorial   71 1944 29.74
14
14
3978 Distance Query   70 1782 32.73
24
21
6471 Printing some primes   70 7419 28.78
13
11
7588 Wise And Miser   70 5436 67.75
8
10
8238 N-Factorful   70 2635 26.49
17
16
10283 ALL IZZ WELL   70 3466 31.35
17
14
11404 Save Thy Toys   70 2814 30.17
12
15
1724 Counting Triangles   69 13123 34.03
7
21
78 Marbles   68 8028 34.96
15
13
1108 Card Trick   68 2207 50.40
21
24
10707 Count on a tree II   68 3196 19.30
31
30
9788 Friends of Friends   67 7129 63.25
7
5
11772 Negative Score   67 3412 34.20
10
11
503 Prime Intervals   66 1773 15.95
21
19
138 Election Posters   65 2296 25.72
20
21
9032 Cube Free Numbers   65 4144 31.68
12
11
1296 4 values whose sum is 0   64 5080 24.89
18
14
11516 VALIDATE THE MAZE   64 3113 32.17
11
8
35674 COLORFUL ARRAY   64 1659 41.28
20
21
8869 Roti Prata   63 7158 39.52
15
17
10628 Count on a tree   63 2470 17.16
32
31
21326 Akbar , The great   63 2544 15.85
21
18
7386 Activities   62 1432 25.55
16
19
11372 Blueberries   62 2231 33.57
12
13
27307 Alternating Sequences   62 2099 32.47
8
9
1028 Hubulullu   61 8238 58.72
2
15

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