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Trie problems
Problem Name Online Judge Year Contest Difficulty Level
1 Phone List Categories UVA 1
2 Phone List Categories SPOJ 1
3 XOR Sum Categories Live Archive 2009 Asia - Amritapuri 1
4 Distinct Substrings Categories SPOJ 1
5 Chocolate Categories SPOJ 1
6 Search in the dictionary! Categories SPOJ 1
7 Order statistic set Categories SPOJ 1
8 Diccionário Portuñol Categories Live Archive 2011 Latin America 2
9 Decoding Morse Sequences Categories SPOJ 2
10 Phone List Categories TJU 2
11 Chuỗi từ Categories SPOJ Vietnam 2
12 SubXor Categories SPOJ 2
13 Multiple Morse Matches Categories Live Archive 2001 Europe - Central & Europe - Southwestern 2
14 Hyper Prefix Sets Categories UVA 3
15 Watto and Mechanism Categories Codeforces Codeforces Round #291 (Div. 2) 3
16 Designing T-Shirts Categories SPOJ 3
17 Polo the Penguin and the Tree Categories CodeChef 3
18 Vasiliy's Multiset Categories Codeforces Codeforces Round #367 (Div. 2) 3
19 Xor Queries Categories CodeChef 3
20 Tin mật Categories SPOJ Vietnam 3
21 Good Substrings Categories Codeforces Codeforces Round #166 (Div. 2) 3
22 Perfect Rhyme Categories SPOJ 3
23 Cellphone Typing Categories UVA 4
24 A Lot of Games Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
25 XOR Minimization Categories CodeChef 4
26 Perfect Security Categories Codeforces VK Cup 2018 - Round 1 4
27 Frequent Substrings Categories UVA 4
28 Secret Message Categories TJU 4
29 Sevenk Love Oimaster Categories SPOJ 4
30 Matrix Matcher Categories UVA 4
31 Polycarp's phone book Categories Codeforces ?????????? 2018 - ?????????? ????? 1 4
32 Shortest Names Categories UVA 4
33 Vitya and Strange Lesson Categories Codeforces Codeforces Round #430 (Div. 2) 5
34 Message Coding Categories CodeChef 5
35 Sausage Maximization Categories Codeforces Codeforces Round #173 (Div. 2) 5
36 Subarray Xor Categories CodeChef 5
37 Multiple Morse Matches Categories UVA 6
38 Old Berland Language Categories Codeforces Codeforces Beta Round #37 7
39 Beautiful Subarrays Categories Codeforces Educational Codeforces Round 12 7
40 Tree Categories A2 Online Judge 7
41 Xor-MST Categories Codeforces Educational Codeforces Round 32 8