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Learning Opportunities

This puzzle can be solved using the following concepts. Practice using these concepts and improve your skills.

Statement

 Goal

You're given a string and a list of changes to do on that string.
Each change includes a line number, a column number, and a string to add at that location.
Commit all of the changes to the given string so they wouldn't interfere with each other.

("\n" should be replaced with a newline.)
Input
Line 1: A string s to manipulate.
Line 2: An integer changeCount for the number of changes.
Next changeCount lines: A string rawChange that manipulates the string.
Output
The manipulated string.
Constraints
s String of length ≥ 1
1 ≤ changeCount ≤ 10
rawChange = {Line number (int)}|{Column number (int)}|{String to add at the position (string)}
Example
Input
Hello world
4
0|11|!
0|5|,\n
0|7| w
0|10|\n
Output
Hello,
 w worl
d!

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