Stringology is Magic
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Read problems statements in Mandarin Chinese and Russian.
You have been given a string T with n lowercase letters T[1..n]. For each substrings T[l..r], we can assign them two values, k1 and k2, which are defined as following.
- k1 is the number of different substrings which are lexicographically smaller than T[l..r]. There are (n + 1) * n / 2 substrings in total.
- k2 indicates the number of substrings which are as same as T[l..r] but have smaller left subscript than l.
In this problem, you need to answer the following two queries:
- Select k1 k2: report l and r, such that T[l..r] are assigned values k1 and k2.
- Rank l r: output the assigned k1 and k2 of T[l..r].
The first line contains a string T with n letters . The second line contains a number m, which represents for the totally number of queries.
Each of the following m lines contains a query. All queries are formed as "Select k1 k2" or "Rank l r".
For each query, output the corresponding answer as the form "l r" or "k1 k2" in a single line.
- 1 <= n <= 10^6
- 1 <= m <= 10^6
- 1 <= l <= r <= n
- k1, k2 are legal .
Input: aa 6 Select 1 1 Select 1 2 Select 2 1 Rank 1 1 Rank 2 2 Rank 1 2
Output: 1 1 2 2 1 2 1 1 1 2 2 1
|Tags||medium, oct14, suffix-array, xiaodao|
|Time Limit:||1 - 10 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, PYP3, CLOJ, FS|
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