Question not clear

I am not getting the question

@ashutosh2 Bro the question says that you need to find the ways in which you can make the given string of parenthesis of length ‘m’ into a balanced string of length ‘n’. You can consider the example-

4 3
)()

Here you have to balance the string of length 3 and convert into a string of length 4. So the given string is ‘s’ and to make it balanced one you have to add a opening bracket in front of it. So there is only one way to balance the given string.