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I was given this code by my professor

```
main.cpp
#include "home.12.h"
int main()
{
cout << mystery(30) << endl;
return SUCCESS;
} // end of main
//=========================================
functions.cpp
#include "home.12.h"
int search(int first, int last, int n){
int returnValue;
cout << "Enter: first = " << first << " last = " << last << endl << endl;
int mid = (first + last) / 2;
if( ( mid * mid <= n ) && ( n < ( mid + 1 ) * ( mid + 1 ) ) ){
returnValue = mid;
}
else if( mid * mid > n )
returnValue = search( first, mid-1, n );
else
returnValue = search( mid+1, last, n );
cout << "Leave: first = " << first << " last = " << last << endl << endl;
return returnValue;
} // end search
//===============================================================================
int mystery( int n ){
return search( 1, n, n );
} // end mystery
```

I have attached an example of the output that is produced with this code. The question the teacher asked is 'What is the output?' I believe she wants the output explain out in english and not just the command prompt window. I do not know how to explain this output out, so that is my question what is this output showing?