Signing in
A local account or your institution's provider, and what changes depending on which.
There are two ways into an AlgoJudge installation, and which ones you see on the sign-in screen is the operator's decision — including, on some installations, seeing no sign-in screen at all.
A local account
Type your username or email and your password, then Sign in.
A wrong password and an unknown login give the same message, Invalid login or password. Anything else — a locked account, for example — comes back with the
Server's own wording.
There is no password reset
The sign-in screen says so: Forgotten your password? An administrator will issue a new one. This version sends no email, so there is no self-service reset. Ask whoever runs the installation.
If there is no password box at all, the installation expects everybody to
arrive through a provider. The form is still reachable at /login?admin=true,
which is where administrators, local and temporary contest accounts sign in.
Hiding the form does not switch password sign-in off.
Through your institution
Where the operator has registered one or more identity providers, the sign-in screen carries a Continue with … button for each. It takes you to your institution, and your institution sends you back.
Three refusals come back to the sign-in screen under Signing in was refused:
| What you see | What it means |
|---|---|
| That provider does not grant you access to this installation. Ask whoever runs it. | Your account at the provider is fine; it maps onto nothing here. |
| That sign-in method is switched off here. | The operator disabled that provider. |
| The sign-in did not complete. Try again, or use a password. | Something went wrong on the way. |
When you never see the sign-in screen
Where an installation takes all its sign-ins from one provider, the operator can point the screen straight at it. Then there is nothing to press: you read Taking you to … for a moment and arrive back signed in, having chosen nothing.
Where you were going survives the trip. A link into an activity, a self-enrolment link with its password, a page you had open when your session expired — you land on that page and not on the front one.
Two things still bring the screen back. /login?admin=true is the form, which is
how administrators and temporary contest accounts sign in on such an
installation. And a refused sign-in returns here with its reason rather than
being sent round again, so the three messages in the table above are as readable
as they are anywhere else.
Creating an account yourself
Most installations do not allow it. Accounts are made by an organiser or arrive through a provider, and the registration screen says so plainly rather than offering a form whose answer is always no.
Sign up is therefore not a promise of a form. Where the operator has pointed registration at a provider it appears even though this installation takes no sign-ups of its own, and it leads to the provider, where whoever offers accounts offers them. What the button means is there is a way in.
Where it is allowed, Sign up on the sign-in screen leads to a form:
- Username is the only field always required — it is what you sign in as.
- First name and Last name are optional. When you give neither, other people see your username instead, including in the ranking.
- Email may be required; the installation decides.
- The password needs at least 12 characters, typed twice.
- The terms box appears only where the installation published terms, and then ticking it is required. It links the terms, and the privacy policy as well where there is one; a link opens the document over the form so you do not lose what you have typed. Where no terms are published there is no box and nothing to accept; a privacy policy on its own is linked from the footer instead.
Afterwards you either sign in straight away or confirm your address first, depending on the installation.
What changes when your account comes from a provider
Your profile is read-only in AlgoJudge, and the account screen says so: This account is managed by the identity provider. Your name, login, address and password are changed there. The fields are visible but disabled, and there is no password tab you can use.
The provider owns the identity; AlgoJudge only recognises it. Editing a copy here would either fail at your next sign-in or quietly disagree with the provider.
See Your account for what you can still do — export your data, and leave.