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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
7208 Black or White   58 1457 42.77
16
19
10514 K12 - Building Construction   58 1926 25.79
13
17
10798 Wachovia Bank   58 3842 46.91
7
9
12933 n-divisors   59 2301 19.30
18
17
18284 Petya and the Road Repairs   59 877 24.00
19
22
28305 Ada and Indexing   59 1936 40.80
15
15
1837 Pie   60 3893 30.27
18
15
2713 Can you answer these queries IV   60 3912 17.21
21
21
2906 GCD2   60 6807 36.48
12
11
3921 The Great Ball   60 3933 39.12
7
11
15965 PLAY WITH MATH   60 6859 46.42
4
5
1028 Hubulullu   61 8217 58.75
2
15
9734 Hacking the random number generator   61 5799 38.90
8
6
13753 Amazing Prime Sequence   61 3319 29.82
11
12
18155 abs(a-b) I   61 4514 48.16
5
9
22776 Balika Vadhu and Alok Nath   61 1189 33.41
14
18
7386 Activities   62 1424 25.48
16
19
8869 Roti Prata   62 7033 39.58
15
17
11372 Blueberries   62 2223 33.56
12
13
27307 Alternating Sequences   62 2095 32.45
8
9
10628 Count on a tree   63 2413 17.07
32
31
21326 Akbar , The great   63 2482 15.81
21
18
1296 4 values whose sum is 0   64 5067 24.87
18
14
11516 VALIDATE THE MAZE   64 3088 32.08
11
8
35674 COLORFUL ARRAY   64 1619 41.35
20
21
138 Election Posters   65 2277 25.65
20
21
503 Prime Intervals   65 1750 15.88
21
19
9032 Cube Free Numbers   65 4127 31.66
12
11
10707 Count on a tree II   65 3054 19.05
31
31
9788 Friends of Friends   67 7119 63.24
7
5
11772 Negative Score   67 3397 34.26
10
11
78 Marbles   68 7956 34.97
15
13
1108 Card Trick   68 2193 50.38
21
24
1724 Counting Triangles   69 13086 34.04
7
21
6471 Printing some primes   69 7200 28.63
13
11
7588 Wise And Miser   69 5401 67.82
8
10
8238 N-Factorful   69 2593 26.43
17
16
10283 ALL IZZ WELL   69 3454 31.30
17
14
3978 Distance Query   70 1740 32.51
24
21
11404 Save Thy Toys   70 2812 30.19
12
15
379 Ambiguous Permutations   71 12329 59.57
4
5
8611 Non-Decreasing Digits   71 3719 54.80
7
11
22403 Divisors of factorial   71 1928 29.73
14
14
10394 Buying Apples!   72 5493 34.86
12
14
288 Prime or Not   73 5067 18.93
21
22
247 Chocolate   74 5836 43.81
10
18
3749 Subset Sums   74 4060 26.35
17
20
6294 Yodaness Level   74 3535 49.23
15
16
12150 Just Next !!!   74 6568 23.06
12
11
339 Recursive Sequence   75 3679 50.25
20
17

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