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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
30690 Ada and Nucleobase   28 468 43.95
25
26
3107 Odd Numbers of Divisors   27 1051 18.31
22
22
6168 Building Bridges   27 1649 26.02
11
17
8547 Euclids algorithm revisited   27 1414 22.92
19
22
15650 Dark roads   27 1471 36.23
10
10
27381 Emoticon   27 827 50.25
8
14
279 Interesting number   26 829 24.13
19
24
1728 Common Permutation   26 4171 46.60
6
6
1840 Printer Queue   26 2902 47.71
14
9
4053 Card Sorting   26 689 43.58
22
27
4201 Coder Ratings   26 1390 35.87
15
18
4343 Empty Boxes   26 3563 66.00
2
13
4487 Can you answer these queries VI   26 1298 23.20
34
28
7217 Training for final   26 2093 45.48
8
6
9066 Sum of Distinct Numbers   26 336 14.35
32
32
10676 0110SS   26 1759 40.96
13
9
11985 Gao on a tree   26 812 14.95
28
27
13384 Nice Binary Trees   26 1789 39.40
9
13
14543 Range Sum   26 985 38.03
11
12
15648 Commando   26 801 32.69
27
34
16121 MODIFY SEQUENCE   26 2364 48.41
6
7
365 Phidias   25 1214 47.23
13
21
1027 Fool the Police   25 1639 26.97
18
23
1557 Can you answer these queries II   25 1651 24.55
28
35
1846 Project File Dependencies   25 2141 41.05
14
15
3505 Prime Number Theorem   25 1529 28.06
14
13
3934 Recaman’s Sequence   25 3530 53.85
9
6
4235 Wandering Queen   25 847 15.00
23
19
10395 Sum of divisors!   25 2357 27.08
16
18
11391 EASY MATH   25 1384 20.10
19
17
11736 Prime Time   25 2157 48.48
11
12
18150 SHAKTIMAN AND KILWISH   25 2806 63.69
3
9
25584 Factorial Modulo   25 411 24.92
10
15
235 Very Fast Multiplication   24 1295 27.74
26
22
726 Promotion   24 2081 28.14
12
8
4164 A conjecture of Paul Erdős   24 2359 44.00
16
15
9756 Alaska   24 2928 35.82
5
3
13388 Easy Jug   24 2148 41.99
6
15
14955 Dancing Cows   24 592 24.86
15
22
18297 Problem4   24 536 32.29
18
20
22382 Euler Totient Function Depth   24 384 36.71
15
16
23847 Acm Teams   24 1653 40.41
2
5
26315 Crazy Smoker   24 1346 35.31
4
9
28304 Ada and Teams   24 799 38.82
15
15
29695 GO GOA GONE   24 875 24.75
12
12
4557 Musical Chairs   23 2474 46.67
9
19
8363 COSTLY CHESS   23 1591 43.45
14
12
10818 Medium Factorization   23 1771 14.34
19
14
15555 Check the coprimeness   23 3246 50.23
3
5
15567 Playing With Balls   23 1768 65.40
2
11

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