Pascal · version 3

Run Pascal 3 online

Pascal 3 — run it in a Firecracker microVM on ls-judge. Real toolchain, no wrapper.

Starter code

What you get in Pascal 3

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

pascal
Pascal 3
program Solution;
var n: integer;
begin
  readln(n);
  writeln(n * 2);
end.
stdin →21
expected →42
How it runs

How ls-judge runs Pascal 3

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 Pascal 3toolchain 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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