shunfurh 于 2017.11.14 18:23 提问
After listening several songs of Jinkeloid,I come up with this problem :).
There is a string s only consist of first 20 lowercase English letters.
And we have several queries,each time I have k letters c1, c2, ..., ck,and I wonder how many consecutive substring of string s that each ci has occur even times in it.
Two substring with the same content but different position are considered different.
The first line contains integer T(1<=T<=5),denote the number of the test cases.
For each test cases,the first line contains a string s(1<= length of s <= 105),the second line contains a number Q (Q<= 3 * 104),denote the number of queries.
Then Q lines follows,each lines start with a number k(1<= k<= 5),then contains k lowercase English letters c1, c2, ..., ck(There won't be duplicated ci).
For each query,print the answer in one line.
3 c a b
2 c b
2 a b
3 c b a
2 a b