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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
30738 Ada and Coins   57 801 31.15
14
22
348 Expedition   58 2248 20.66
20
20
3878 Rectangles Perimeter   58 2697 49.85
12
14
7208 Black or White   58 1479 42.45
16
19
10514 K12 - Building Construction   58 1993 26.05
12
16
10798 Wachovia Bank   58 4012 46.80
7
9
3693 Maximum Sum   59 6543 42.33
19
18
28305 Ada and Indexing   59 2147 41.98
15
15
1837 Pie   60 4039 30.30
18
15
2530 Tiling a Grid With Dominoes   60 2428 64.86
16
24
2713 Can you answer these queries IV   60 4213 17.58
21
21
2906 GCD2   60 6835 36.48
12
11
3921 The Great Ball   60 3942 39.11
7
11
12933 n-divisors   60 2327 19.34
18
17
15965 PLAY WITH MATH   60 6892 46.47
4
5
18284 Petya and the Road Repairs   60 885 23.98
19
22
1028 Hubulullu   61 8248 58.73
2
15
13753 Amazing Prime Sequence   61 3350 29.90
11
12
18155 abs(a-b) I   61 4628 47.97
5
9
22776 Balika Vadhu and Alok Nath   61 1197 33.46
14
18
7386 Activities   62 1437 25.53
16
19
9734 Hacking the random number generator   62 5859 39.00
8
6
10628 Count on a tree   62 2547 17.34
32
31
11372 Blueberries   62 2239 33.60
12
13
27307 Alternating Sequences   62 2114 32.56
8
9
8869 Roti Prata   63 7286 39.49
15
17
21326 Akbar , The great   63 2616 15.97
21
18
1296 4 values whose sum is 0   64 5108 24.90
18
14
11516 VALIDATE THE MAZE   64 3144 32.12
11
8
138 Election Posters   65 2310 25.72
20
21
9032 Cube Free Numbers   65 4156 31.72
12
11
35674 COLORFUL ARRAY   65 1702 41.26
20
21
503 Prime Intervals   66 1794 16.00
21
19
9788 Friends of Friends   67 7140 63.27
7
5
11772 Negative Score   67 3432 34.15
10
11
78 Marbles   68 8113 34.96
15
13
1108 Card Trick   68 2224 50.40
21
24
1724 Counting Triangles   69 13165 34.01
7
21
10707 Count on a tree II   69 3364 19.42
31
30
3978 Distance Query   70 1861 32.84
24
21
7588 Wise And Miser   70 5471 67.57
8
10
8238 N-Factorful   70 2704 26.65
17
16
10283 ALL IZZ WELL   70 3473 31.36
17
14
11404 Save Thy Toys   70 2817 30.16
12
15
379 Ambiguous Permutations   71 12363 59.59
4
5
6471 Printing some primes   71 7616 28.85
13
11
8611 Non-Decreasing Digits   71 3725 54.81
7
11
22403 Divisors of factorial   71 1967 29.83
14
14
288 Prime or Not   73 5312 19.11
21
22
10394 Buying Apples!   73 5576 34.89
12
14

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