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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
15436 Slick   52 2023 33.23
9
9
9126 Time to live   48 2020 37.76
12
15
11840 Sum of Squares with Segment Tree   53 2005 50.93
23
18
4164 A conjecture of Paul ErdÅ‘s   23 2001 45.10
16
14
7668 Pebble Solver   15 1995 50.40
8
11
10639 The Blind Passenger   9 1989 44.73
4
5
3408 DNA Sequences   46 1975 26.29
16
20
14441 Three Circle Problem (EASY)   12 1961 55.34
6
13
4206 Fast Maximum Matching   29 1946 29.21
22
19
9820 Through the troops   29 1946 44.94
12
11
13913 Real Mangoes for Ranjith   7 1929 41.96
3
8
33 Trip   18 1928 25.91
25
16
8545 Subset sum   45 1922 39.94
12
16
4549 Adding Sevens   19 1921 33.11
17
6
22403 Divisors of factorial   70 1905 29.88
14
14
15429 Counting Ids   15 1894 50.03
5
5
16139 Naya Shatranj (New Chess)   10 1886 68.97
4
17
2006 Load Balancing   19 1884 47.41
11
19
10514 K12 - Building Construction   57 1878 25.59
12
17
11374 Database   11 1867 34.67
6
6
23776 K-Query Online   82 1862 40.63
20
24
16211 Boring Factorials   34 1861 34.67
12
17
8374 PARKET   4 1836 56.12
3
4
8725 Closest Point Pair   31 1834 20.16
19
21
9805 Be Awesome As Barney Stinson   43 1805 68.20
12
13
1812 Longest Common Substring II   14 1793 17.63
29
29
51 Fake tournament   42 1786 27.35
18
19
2901 One Geometry Problem   9 1784 36.01
4
13
10228 Magic Grid   44 1781 26.31
14
19
25942 Ball sum   42 1770 35.66
11
11
9340 Arbitrage   35 1763 39.06
11
17
16033 Tip Top Game   17 1758 27.06
2
7
23976 Mohib and series   40 1758 47.07
4
7
15567 Playing With Balls   23 1757 65.44
2
11
12880 Sheep   38 1751 44.42
10
10
9952 111…1 Squared   8 1748 46.58
5
10
21332 Pigeonhole Tower   7 1748 35.69
4
6
11932 Amz Rock   12 1745 62.09
4
7
4082 BLAST   30 1742 51.60
8
16
10676 0110SS   25 1742 41.14
13
9
13384 Nice Binary Trees   26 1741 39.09
9
13
22393 KATHTHI   56 1740 32.18
16
17
4226 Japan   30 1738 23.26
16
19
3920 Lucius Dungeon   17 1736 38.66
17
12
12914 Totient Extreme   42 1732 39.97
8
11
503 Prime Intervals   64 1724 15.77
21
19
359 Alpha Centauri Tennis   2 1721 50.53
3
8
28305 Ada and Indexing   56 1718 40.80
15
15
2939 Query on a tree V   75 1714 27.89
29
30
10293 FANCY NUMBERS   18 1714 50.28
7
9

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