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Binary Indexed Tree problems
Problem Name Online Judge Year Contest Difficulty Level
1 Coder Ratings Categories SPOJ 1
2 The day of the competitors Categories SPOJ 1
3 Interval Product Categories Live Archive 2012 Latin America 1
4 Assistance Required Categories SPOJ 1
5 Bingo! Categories Live Archive 2010 Latin America 1
6 Ordering the Soldiers Categories SPOJ 1
7 Can you answer these queries IV Categories SPOJ 1
8 Order statistic set Categories SPOJ 1
9 D-query Categories SPOJ 1
10 K-query Categories SPOJ 1
11 Number of Ways Categories Codeforces Codeforces Round #266 (Div. 2) 1
12 Jupiter Atacks! Categories Live Archive 2011 Latin America 1
13 Japan Categories SPOJ 1
14 Horrible Queries Categories SPOJ 1
15 Update the array ! Categories SPOJ 1
16 Card Trick Categories SPOJ 1
17 Matrix Summation Categories SPOJ 1
18 Little Girl and Maximum Sum Categories Codeforces Codeforces Round #169 (Div. 2) 1
19 Inversion Count Categories SPOJ 1
20 Gravel Categories CodeChef 1
21 Increasing Subsequences Categories SPOJ 1
22 Yodaness Level Categories SPOJ 1
23 Meteors Categories SPOJ 2
24 Greg and Array Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 2
25 Distinct Increasing Subsequences Categories SPOJ 2
26 WIND VANE Categories SPOJ 2
27 Matrix Categories SPOJ 2
28 Cvjetici Categories SPOJ 2
29 Counting inversions Categories SPOJ 2
30 Potentiometers Categories UVA 2
31 Karen and Coffee Categories Codeforces Codeforces Round #419 (Div. 2) 2
32 Round-Robin Scheduling Categories SPOJ 2
33 IOI01 Mobiles Categories SPOJ 2
34 Chaos Strings Categories SPOJ 2
35 Interval Product Categories UVA 2
36 Fenwick Trees Categories SPOJ 2
37 Thor Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 2
38 Salary Management Categories SPOJ 3
39 Chef and Swaps Categories CodeChef 3
40 Ping pong Categories UVA 3
41 UFOs Categories Timus 3
42 Team Selection Categories SPOJ 3
43 Queue (Pro) Categories SPOJ 3
44 Census Categories UVA 3
45 Above the Median Categories SPOJ Vietnam 3
46 Calculate The Cost Categories SPOJ 3
47 Pashmak and Parmida's problem Categories Codeforces Codeforces Round #261 (Div. 2) 3
48 New bricks disorder Categories SPOJ 3
49 Counting pairs Categories SPOJ 4
50 Propagating tree Categories Codeforces Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2) 4
51 Cow Photographs Categories SPOJ 4
52 Movie collection Categories UVA 4
53 ``Dynamic'' Inversion Categories UVA 5
54 Pillars Categories Codeforces Codeforces Round #271 (Div. 2) 5
55 PolandBall and Polygon Categories Codeforces 8VC Venture Cup 2017 - Elimination Round 5
56 Jupiter Atacks! Categories UVA 5
57 Tufurama Categories Codeforces Educational Codeforces Round 41 (Rated for Div. 2) 5
58 Balé Categories SPOJ Brazil 5
59 Mishka and Interesting sum Categories Codeforces Codeforces Round #365 (Div. 2) 5
60 Infinite Inversions Categories Codeforces Codeforces Round #301 (Div. 2) 6
61 FloatingMedian Categories TopCoder SRM 310 - Div1 medium - Div2 hard] (9990) 6
62 Sereja and Arcs Categories CodeChef 6
63 Valera and Queries Categories Codeforces Codeforces Round #216 (Div. 2) 6
64 Dog Show Categories Codeforces 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) 7
65 Ambitious Experiment Categories Timus 7
66 Count The Indexes 2 Categories SPOJ 7
67 George and Cards Categories Codeforces Codeforces Round #227 (Div. 2) 7
68 Júpiter Ataca! Categories SPOJ Brazil 8
69 Radio stations Categories Codeforces Educational Codeforces Round 17 8