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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
22393 KATHTHI   57 2128 33.09
16
17
30738 Ada and Coins   57 836 31.63
14
22
348 Expedition   58 2253 20.68
20
20
3878 Rectangles Perimeter   58 2698 49.86
12
14
7208 Black or White   58 1479 42.43
16
19
10514 K12 - Building Construction   58 2022 26.23
12
16
3693 Maximum Sum   59 6578 42.39
19
18
10798 Wachovia Bank   59 4029 46.79
7
8
28305 Ada and Indexing   59 2218 42.19
15
15
1837 Pie   60 4079 30.39
18
15
2530 Tiling a Grid With Dominoes   60 2433 64.88
16
24
2713 Can you answer these queries IV   60 4256 17.60
21
21
2906 GCD2   60 6848 36.49
12
11
3921 The Great Ball   60 3944 39.13
7
11
12933 n-divisors   60 2331 19.35
18
17
15965 PLAY WITH MATH   60 6895 46.48
4
5
18284 Petya and the Road Repairs   60 888 24.00
19
22
1028 Hubulullu   61 8252 58.72
2
15
13753 Amazing Prime Sequence   61 3355 29.91
11
12
18155 abs(a-b) I   61 4655 47.93
5
9
22776 Balika Vadhu and Alok Nath   61 1199 33.48
14
18
7386 Activities   62 1440 25.54
16
19
9734 Hacking the random number generator   62 5872 39.02
8
6
10628 Count on a tree   62 2573 17.34
32
31
11372 Blueberries   62 2243 33.61
12
13
27307 Alternating Sequences   62 2120 32.58
8
9
8869 Roti Prata   63 7350 39.51
15
17
1296 4 values whose sum is 0   64 5112 24.90
18
14
11516 VALIDATE THE MAZE   64 3160 32.16
11
8
21326 Akbar , The great   64 2667 15.99
21
17
138 Election Posters   65 2320 25.77
20
21
9032 Cube Free Numbers   65 4162 31.75
12
11
35674 COLORFUL ARRAY   65 1729 41.34
20
21
503 Prime Intervals   66 1805 16.05
21
19
9788 Friends of Friends   67 7144 63.28
7
5
11772 Negative Score   67 3438 34.17
10
11
78 Marbles   68 8151 34.95
15
13
1108 Card Trick   68 2232 50.36
21
24
1724 Counting Triangles   69 13180 34.00
7
21
10707 Count on a tree II   69 3474 19.50
31
30
7588 Wise And Miser   70 5490 67.48
8
10
8238 N-Factorful   70 2736 26.65
17
16
10283 ALL IZZ WELL   70 3486 31.37
17
14
11404 Save Thy Toys   70 2820 30.17
12
15
379 Ambiguous Permutations   71 12369 59.60
4
5
3978 Distance Query   71 1901 32.91
24
21
6471 Printing some primes   71 7695 28.86
13
11
8611 Non-Decreasing Digits   71 3728 54.82
7
11
22403 Divisors of factorial   71 1971 29.84
14
14
288 Prime or Not   73 5362 19.17
21
22

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