Welcome to Dreamhack Online Judge!

Dreamhack Online Judge(DOJ) is a set of assembly challenges. Your goal is to read the description and submit the correct x86-64 machine code. The server will execute your machine code and judge if your code produces the correct output.

To begin the journey, let's start with the basics: print the string Hello World! at standard output.

References

Dreamhack Online Judge Github - All DOJ challenges use this as base image of the server.

Note

2025.07.11 : Patched the judge binary and its source code. Now the program can either call exit(0) or let main() return 0.