How to rename 34178 files?

Question

Data recovery

There are two folders each with 34178 files:
1. With correct names, file sizes and subdirectory structure. But with corrupted file contents.
2. With the right size and content. But not with correct filenames and no subdirectory structure.
You need to get a third folder with the correct names, contents, and subdirectory structure. Each of the 34178 files is unique in size.
PS For housewives, without programming

Answer 1

copy the full names of the files from the first and second folders along with their sizes to excel, sort by size, concatenate into the ren command and execute a long batch file?
If you know how to use FAR_om, do the same in its editor?
If you know how to program in scripting languages, do the same in any convenient language.

Answer 2

well, write a program that will compare everything and generate the correct structure from the correct files.

Answer 3

Send all this to me in an archive (unless, of course, this is confidential information), I will try to rename it. fdisk doggy mail.ru