runcoder cannot open output file sort.exe: Permission denied

This error message indicates that the user account running the runcoder command does not have sufficient permissions to create or modify the file "sort.exe" in the current directory.

To resolve this issue, you may need to check the permissions on the directory and the file itself to ensure that the user account has write access. You may also need to run the runcoder command with elevated privileges, such as by running it as an administrator or using the sudo command.

If you are working in a shared environment or on a remote server, you may also need to check with the system administrator or owner of the file to ensure that you have the necessary permissions to modify or execute it.