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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
3107 Odd Numbers of Divisors   27 1046 18.26
22
22
6168 Building Bridges   27 1640 26.03
11
17
8547 Euclids algorithm revisited   27 1396 22.96
19
22
10620 KNJIGE   27 1440 44.33
4
18
15650 Dark roads   27 1405 36.35
10
10
27381 Emoticon   27 799 49.95
8
14
279 Interesting number   26 816 24.04
19
24
1728 Common Permutation   26 4150 46.50
6
6
1840 Printer Queue   26 2870 47.54
14
9
4201 Coder Ratings   26 1386 35.98
15
18
4343 Empty Boxes   26 3553 66.08
2
13
7217 Training for final   26 2089 45.46
8
6
10676 0110SS   26 1748 41.15
13
9
11985 Gao on a tree   26 737 14.99
28
27
13384 Nice Binary Trees   26 1787 39.42
9
13
14543 Range Sum   26 958 38.20
11
12
16121 MODIFY SEQUENCE   26 2353 48.32
6
7
365 Phidias   25 1211 47.21
13
21
1027 Fool the Police   25 1637 26.97
18
23
1846 Project File Dependencies   25 2140 41.04
14
15
3505 Prime Number Theorem   25 1521 28.03
14
13
3934 Recaman’s Sequence   25 3527 53.90
9
6
4053 Card Sorting   25 678 43.21
21
26
4235 Wandering Queen   25 839 15.11
23
19
4487 Can you answer these queries VI   25 1239 22.79
34
28
9066 Sum of Distinct Numbers   25 334 14.30
32
32
10395 Sum of divisors!   25 2342 27.03
16
18
11391 EASY MATH   25 1318 19.95
19
17
11736 Prime Time   25 2149 48.45
11
12
15648 Commando   25 724 32.21
27
34
18150 SHAKTIMAN AND KILWISH   25 2787 63.81
3
9
25584 Factorial Modulo   25 408 25.02
10
15
235 Very Fast Multiplication   24 1266 27.79
26
22
726 Promotion   24 2071 28.13
12
8
9756 Alaska   24 2918 35.81
5
3
13388 Easy Jug   24 2144 41.98
6
15
18297 Problem4   24 536 32.42
18
20
22382 Euler Totient Function Depth   24 377 36.43
15
16
23847 Acm Teams   24 1640 40.30
2
5
29695 GO GOA GONE   24 827 24.29
12
12
1557 Can you answer these queries II   23 1552 24.19
30
36
4164 A conjecture of Paul Erdős   23 2138 44.50
16
14
4557 Musical Chairs   23 2473 46.65
9
19
8363 COSTLY CHESS   23 1498 43.72
14
12
14955 Dancing Cows   23 589 24.75
14
21
15285 Defend The Rohan   23 1236 43.31
5
8
15555 Check the coprimeness   23 3230 50.30
3
5
15567 Playing With Balls   23 1760 65.36
2
11
15980 Ascending Fibonacci Numbers   23 802 17.26
17
13
21853 Rivals   23 505 33.67
17
24

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