Substrings and Repetitions
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Given a string S and several frequencies Fi. For each Fi output the number of substrings of S (the characters of substring should be contiguous) that occur at least Fi times in S. Note, that we consider two substrings distinct if they have distinct length, or they have distinct starting indices.
The first line of input contains integer T, the number of test cases.
The first line of each test case contains string S (it contains only lowercase Latin letters). The second line of each test case contains an integer Q, that is the number of queries to be answered. Then Q lines follows containing Fi each.
For each query, output the required answer.
- 1 ≤ |S| ≤ 200000
- 1 ≤ Q ≤ 200000
- 1 ≤ Fi ≤ 200000
- Sum of |S| over all test cases ≤ 200000
- Sum of Q over all test cases ≤ 200000
Input: 1 aaeddf 4 1 2 3 4 Output: 21 4 0 0
There are a total of 6*(6+1)/2 substrings, all of them occur at least once. So for F1=1 answer is equal to 21. Note that substring "a" is repeated 2 times in S, both the instances are added to the answer.
Look at F2=2. Substring "a" and substring "d" occurs 2 times each in S. The answer for F2 is 4, that is all the occurrences of "a" and "d".
There are no substrings which repeat more than twice. So rest answers are 0
|Tags||anudeep2011, cook46, disjoint-set, medium-hard, segment-tree, stack, suffix-array, suffix-trees|
|Time Limit:||1 sec|
|Source Limit:||50000 Bytes|
|Languages:||C, CPP14, JAVA, PYTH, PYTH 3.6, CS2, PAS fpc, PAS gpc, RUBY, PHP, GO, NODEJS, HASK, SCALA, D, PERL, FORT, WSPC, ADA, CAML, ICK, BF, ASM, CLPS, PRLG, ICON, SCM qobi, PIKE, ST, NICE, LUA, BASH, NEM, LISP sbcl, LISP clisp, SCM guile, JS, ERL, TCL, PERL6, TEXT, CLOJ, FS|
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