| Difficulty | Max Score | Success Ratio |
|---|---|---|
| Easy | 10 | 97.70% |
Sometimes it's better to use dynamic size arrays. Java's Arraylist can provide you this feature. Try to solve this problem using Arraylist.
You are given [SVG image] lines. In each line there are zero or more integers. You need to answer a few queries where you need to tell the number located in [SVG image] position of [SVG image] line.
Take your input from System.in.
Input Format
The first line has an integer [SVG image] . In each of the next [SVG image] lines there will be an integer [SVG image] denoting number of integers on that line and then there will be [SVG image] space-separated integers. In the next line there will be an integer [SVG image] denoting number of queries. Each query will consist of two integers [SVG image] and [SVG image] .
Constraints
- [SVG image]
- [SVG image]
- [SVG image]
- [SVG image]
Each number will fit in signed integer.
Total number of integers in [SVG image] lines will not cross [SVG image] .
Output Format
In each line, output the number located in [SVG image] position of [SVG image] line. If there is no such position, just print "ERROR!"
Sample Input
5
5 41 77 74 22 44
1 12
4 37 34 36 52
0
3 20 22 33
5
1 3
3 4
3 1
4 3
5 5
Sample Output
74
52
37
ERROR!
ERROR!
Explanation
The diagram below explains the queries:
View Solution : Java Arraylist
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