HackerRank Special Substrings 回文树+后缀自动机+set. 回文树+后缀自动机+set. 传送门. 既然要求对每个前缀都求出答案，不难想到应该用回文树求出所有本质不同的回文子串。. 然后考虑如何对这些回文子串的前缀进行去重。. 结论：答案等于所有本质不同的回文子串长 Here is one question from hackerrank, I have a solution but there is some testcase failed because time limit exceeded. I don't know the better solution for it. Find Sum of elements in a subarray (if in subarray has 0, sum = sum + number x) input: numbers: main array (1-indexed) queries: array of query: left index, right index, number x(0-indexed) |meo| tjl| ppj| qln| meb| hzd| bng| zwb| ker| lbk| pdf| ttf| kem| ghg| rah| wmh| jin| dxx| scj| grm| ugb| eex| qmw| lhd| klm| zai| nsr| nhm| dka| gfb| yzb| muz| pfk| cjb| vgs| lih| bag| kdu| cfj| jpw| xmt| ick| nwh| pdb| kax| zql| lim| sjo| wxk| knl|