5211: Mike and Friends
内存限制：256 MB
时间限制：2 S
题面：传统
评测方式：文本比较
上传者：
提交：0
通过：0
题目描述
E. Mike and Friends
time limit per test
3 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output
What-The-Fatherland is a strange country! All phone numbers there are strings consisting of lowercase English letters. What is double strange that a phone number can be associated with several bears!
In that country there is a rock band called CF consisting of n bears (including Mike) numbered from 1 to n.
Phone number of i-th member of CF is si. May 17th is a holiday named Phone Calls day. In the last Phone Calls day, everyone called all the numbers that are substrings of his/her number (one may call some number several times). In particular, everyone called himself (that was really strange country).
Denote as call(i,j) the number of times that i-th member of CF called the j-th member of CF.
The geek Mike has q questions that he wants to ask you. In each question he gives you numbers l,r and k and you should tell him the number
In that country there is a rock band called CF consisting of n bears (including Mike) numbered from 1 to n.
Phone number of i-th member of CF is si. May 17th is a holiday named Phone Calls day. In the last Phone Calls day, everyone called all the numbers that are substrings of his/her number (one may call some number several times). In particular, everyone called himself (that was really strange country).
Denote as call(i,j) the number of times that i-th member of CF called the j-th member of CF.
The geek Mike has q questions that he wants to ask you. In each question he gives you numbers l,r and k and you should tell him the number
Input
The first line of input contains integers n and q (1≤n≤2×105 and 1≤q≤5×105).
The next n lines contain the phone numbers, i-th line contains a string si consisting of lowercase English letters (
).
The next q lines contain the information about the questions, each of them contains integers l,r and k (1≤l≤r≤n and 1≤k≤n).
Output
Print the answer for each question in a separate line.
Examples
Input
5 5 a ab abab ababab b 1 5 1 3 5 1 1 5 2 1 5 3 1 4 5
Output
7 5 6 3 6
输入样例 复制
输出样例 复制