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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
348 Expedition   58 2195 20.46
20
20
3878 Rectangles Perimeter   58 2689 49.85
12
14
7208 Black or White   58 1437 43.45
16
19
10798 Wachovia Bank   58 3811 46.86
7
9
12933 n-divisors   59 2287 19.28
18
17
18284 Petya and the Road Repairs   59 875 24.00
19
22
1028 Hubulullu   60 8198 58.77
2
15
1837 Pie   60 3809 30.38
18
15
2713 Can you answer these queries IV   60 3685 17.00
21
21
2906 GCD2   60 6789 36.48
12
11
3921 The Great Ball   60 3924 39.09
7
11
15965 PLAY WITH MATH   60 6827 46.44
4
5
8869 Roti Prata   61 6744 39.84
15
17
9734 Hacking the random number generator   61 5739 38.85
8
6
13753 Amazing Prime Sequence   61 3303 29.76
11
12
18155 abs(a-b) I   61 4472 48.12
5
9
22776 Balika Vadhu and Alok Nath   61 1185 33.37
14
18
7386 Activities   62 1417 25.48
16
19
10628 Count on a tree   62 2317 17.00
32
31
10707 Count on a tree II   62 2863 18.73
31
31
11372 Blueberries   62 2215 33.53
12
13
27307 Alternating Sequences   62 2090 32.45
8
9
1296 4 values whose sum is 0   63 5055 24.87
18
14
11516 VALIDATE THE MAZE   63 3048 32.04
11
8
21326 Akbar , The great   63 2393 15.71
21
18
35674 COLORFUL ARRAY   63 1528 41.49
20
20
138 Election Posters   65 2264 25.61
20
21
503 Prime Intervals   65 1732 15.79
21
19
9032 Cube Free Numbers   65 4117 31.67
12
11
9788 Friends of Friends   66 7106 63.22
7
5
78 Marbles   67 7870 34.95
15
13
8238 N-Factorful   67 2476 26.39
17
16
11772 Negative Score   67 3374 34.31
10
11
1108 Card Trick   68 2176 50.37
21
24
3978 Distance Query   68 1665 32.03
24
21
6471 Printing some primes   68 6929 28.57
13
12
1724 Counting Triangles   69 13024 34.04
7
21
7588 Wise And Miser   69 5360 67.82
8
10
10283 ALL IZZ WELL   69 3438 31.28
17
14
379 Ambiguous Permutations   70 12295 59.53
4
5
11404 Save Thy Toys   70 2809 30.18
12
15
8611 Non-Decreasing Digits   71 3715 54.78
7
11
22403 Divisors of factorial   71 1910 29.71
14
14
10394 Buying Apples!   72 5376 34.91
12
14
288 Prime or Not   73 4931 18.77
21
22
3749 Subset Sums   73 4008 26.28
17
20
18167 SubXor   73 1649 30.36
25
29
247 Chocolate   74 5717 44.31
10
18
6294 Yodaness Level   74 3519 49.23
15
16
12150 Just Next !!!   74 6533 23.08
12
11

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