ascii characters are actuallt just integers, there's an ordered ascii character chart wich is useful to understand these kinds of opertations, wich exploit the order of the chart to maximize efficiency

Fixed.

Had to fork almost every single language because "Revisions is invalid"

Fixed.

The numbers generated by the random tests can't be less than 1. Maybe you edited the sample tests?

TypeScript

Maybe. But my C++ solution still works, so I still think there's mistake in your code.

Maybe. But, it is occurring when I make an attempt to return the string. A string is modified after erase all '#' wtih std::string::erase. Also, I can output the modified string to the console.

When you read the error message you see that it's a stack overflow error so probably your solution causes too deep (infinite?) recursion, or creates a very large stack variable.

I got it, what should i do? (C++)

UndefinedBehaviorSanitizer:DEADLYSIGNAL
==1==ERROR: UndefinedBehaviorSanitizer: stack-overflow on address 0x7fffbca4a000 (pc 0x000000425520 bp 0x7fffbca490e8 sp 0x7fffbca48bf0 T1)
==1==WARNING: invalid path to external symbolizer!
==1==WARNING: Failed to use and restart external symbolizer!
#0 0x42551f (/workspace/test+0x42551f)
#1 0x428149 (/workspace/test+0x428149)
#2 0x4269ce (/workspace/test+0x4269ce)
#3 0x426523 (/workspace/test+0x426523)
#4 0x4260fb (/workspace/test+0x4260fb)
#5 0x42ab15 (/workspace/test+0x42ab15)
#6 0x42577d (/workspace/test+0x42577d)
#7 0x7fe13021abf6 (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)
#8 0x404569 (/workspace/test+0x404569)

==1==ABORTING