list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
15436 Slick   52 2027 33.19
9
9
9126 Time to live   48 2021 37.76
12
15
11840 Sum of Squares with Segment Tree   53 2013 50.92
23
18
4164 A conjecture of Paul ErdÅ‘s   23 2008 45.08
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 26.28
16
20
14441 Three Circle Problem (EASY)   12 1961 55.34
6
13
9820 Through the troops   29 1950 44.91
12
11
4206 Fast Maximum Matching   29 1948 29.17
22
19
33 Trip   18 1933 25.91
25
16
13913 Real Mangoes for Ranjith   7 1929 41.96
3
8
8545 Subset sum   45 1923 39.93
12
16
4549 Adding Sevens   19 1921 33.11
17
6
22403 Divisors of factorial   70 1906 29.76
14
14
15429 Counting Ids   15 1897 50.01
5
5
16139 Naya Shatranj (New Chess)   10 1887 68.96
4
17
2006 Load Balancing   19 1886 47.37
11
19
11374 Database   11 1883 34.67
6
6
10514 K12 - Building Construction   57 1881 25.61
12
17
23776 K-Query Online   83 1867 40.58
20
24
16211 Boring Factorials   34 1861 34.67
12
17
8725 Closest Point Pair   31 1839 20.17
19
21
8374 PARKET   4 1836 56.12
3
4
1812 Longest Common Substring II   14 1807 17.69
29
29
9805 Be Awesome As Barney Stinson   43 1807 68.22
12
13
2901 One Geometry Problem   9 1787 36.04
4
13
51 Fake tournament   42 1786 27.33
18
19
10228 Magic Grid   44 1783 26.32
14
19
9340 Arbitrage   35 1774 39.08
11
17
25942 Ball sum   42 1770 35.63
11
11
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 1755 44.44
10
10
22393 KATHTHI   56 1753 32.22
16
17
9952 111…1 Squared   8 1750 46.60
5
10
21332 Pigeonhole Tower   7 1748 35.69
4
6
11932 Amz Rock   12 1747 61.94
4
7
13384 Nice Binary Trees   26 1743 39.11
9
13
4082 BLAST   30 1742 51.60
8
16
10676 0110SS   25 1742 41.14
13
9
4226 Japan   30 1741 23.25
16
19
3920 Lucius Dungeon   17 1737 38.66
17
12
12914 Totient Extreme   42 1734 39.99
8
11
28305 Ada and Indexing   56 1732 40.85
15
15
503 Prime Intervals   65 1727 15.78
21
19
359 Alpha Centauri Tennis   2 1722 50.53
3
8
2939 Query on a tree V   75 1716 27.78
29
30
1799 The Bottom of a Graph   50 1714 32.40
21
21

Most popular tags