D · version 2

Run D 2 online

D 2 — run it in a Firecracker microVM on ls-judge. Real toolchain, no wrapper.

Starter code

What you get in D 2

Clicking "Run now" opens the playground with this exact code and a matching test case — passes on first Run.

d
D 2
import std.stdio, std.conv, std.string;
void main() { int n = readln().strip().to!int; writeln(n * 2); }
stdin →21
expected →42
How it runs

How ls-judge runs D 2

Every submission is compiled and executed inside its own Firecracker microVM — the same isolation primitive AWS Lambda uses. No shared container, no shared kernel with other users' code. The D 2toolchain shipped with the microVM is the real thing (not a browser-side emulation): syscalls behave the way they do in production, and the compile / runtime behaviour matches what you would see on your own machine with that version installed.

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