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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
40083 Just Primes   11 124 29.90
15
17
4201 Coder Ratings   26 1397 35.83
15
18
18176 FRIENDSHIP!!!   16 631 26.94
15
21
6294 Yodaness Level   74 3574 49.30
15
16
50 Invitation Cards   29 1782 43.12
16
18
5301 Query Problem   7 695 37.33
16
22
10395 Sum of divisors!   25 2383 27.06
16
18
25780 Decreasing Number of Visible Box   18 253 39.68
16
16
26703 All about Sorting!   10 87 42.28
16
17
30947 Sabbir and gifts   21 373 32.88
16
13
36199 Subset with all Digits   18 246 33.86
16
19
10810 Its a Murder!   56 2403 22.15
16
16
10471 Aliens at the train, again!   28 815 44.66
16
16
22393 KATHTHI   58 2213 33.41
16
17
7259 Light Switching   102 4696 34.33
16
15
3964 Investment Money   15 627 25.73
16
17
4226 Japan   30 1803 23.39
16
19
13015 Counting Primes   33 1475 22.55
16
14
14935 Cactus   6 224 20.02
16
14
26193 Lost and survived   46 846 35.46
16
12
27217 Minimum Sum   13 189 41.37
16
12
25773 Bit Difference   19 422 34.96
16
20
1798 Assistance Required   14 2380 44.79
16
7
2742 Summing Sums   17 921 19.10
16
23
4164 A conjecture of Paul ErdÅ‘s   25 2688 43.79
16
14
9458 Ghosts having fun   10 224 12.22
16
24
25784 Bubble Sort   10 742 21.44
16
17
34686 Meet Her Fast!   8 144 42.05
16
12
35284 Digit Root   13 107 36.34
16
20
8 Complete the Sequence!   32 4520 36.74
16
18
1538 Making Jumps   11 1466 38.91
16
15
2426 Palindromes   10 1026 24.80
16
15
5732 Paradox   43 1241 27.87
16
19
21083 Lexicographically Smallest   14 250 33.20
16
17
30454 Luke vs. Darth Vader   15 225 22.33
16
15
4033 Phone List   151 7335 31.82
16
14
203 Potholers   22 2290 26.51
16
12
6256 Inversion Count   534 18099 32.03
16
18
2530 Tiling a Grid With Dominoes   60 2440 64.85
16
24
5970 Finding Primes   22 1345 27.95
16
15
26575 Grand Reward   9 435 59.06
16
8
30919 Sabbir and gcd problem   17 336 23.03
16
16
7208 Black or White   58 1482 42.45
16
19
4168 Square-free integers   14 788 46.27
16
21
10366 Play with Dates   9 1434 38.73
16
6
15620 Postering   16 735 33.96
16
21
4103 Extend to Palindrome   44 2589 30.58
16
17
17725 Bad XOR   50 1052 23.85
16
22
3408 DNA Sequences   47 1991 26.13
16
20
15562 Find Lexicographically Smallest Permutation   13 365 40.41
16
13

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