Submit and Read Your First Verdict
Understand AC, WA, TLE, RE, and MLE.
Submit and Read Your First Verdict is a free Coding Interview Prep lesson on CoddyKit — lesson 4 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Coding Interview Prep learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Time to Submit
You paste your code, pick Python 3, and hit submit. The judge runs it on every hidden test and replies with a one-line verdict. 📨
Accepted: AC
Accepted, shown as AC, means your code passed every test inside the limits. This is the green light you are chasing. ✅
Wrong Answer: WA
Wrong Answer, or WA, means your output differs from the expected one on some test. Your logic, not your speed, is off.
Time Limit Exceeded: TLE
Time Limit Exceeded, or TLE, means the answer was too slow. Usually you need a smarter algorithm, not just faster typing.
Runtime Error: RE
Runtime Error, or RE, means your program crashed mid-run, often from dividing by zero or reading past the end of a list.
Memory Limit Exceeded: MLE
Memory Limit Exceeded, or MLE, means you stored too much at once. Shrinking your data structures usually fixes it.
WA Means Rethink Logic
On a WA, recheck your logic and re-trace the sample. An overlooked edge case or a misread output format is the usual culprit.
TLE Means Rethink Speed
On a TLE, study the constraints again and target a lower complexity. A nested loop over large N is the classic cause.
Reproduce RE Locally
For an RE, run the code yourself on tricky inputs. The Python traceback names the exact line and reason it crashed.
arr = [1, 2, 3]
print(arr[5])Read the Failing Test Number
Judges often show which test failed first. Test 1 failing often means a basic bug, while a high number hints at an edge case.
Iterate Calmly
A non-AC verdict is feedback, not failure. Read it, form one hypothesis, fix that, and resubmit. This loop is the whole game.
Quick Check
Your solution is correct on small inputs but the judge returns TLE. What does that signal?
Recap
AC is the win; WA points to logic, TLE to speed, RE to a crash, and MLE to memory. Read the verdict, fix one thing, resubmit. 🎉
Frequently asked questions
Is the “Submit and Read Your First Verdict” lesson free?
Yes — the full text of “Submit and Read Your First Verdict” is free to read here on the web, and the Coding Interview Prep course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Coding Interview Prep course, upgrade to CoddyKit PRO.
What will I learn in “Submit and Read Your First Verdict”?
Understand AC, WA, TLE, RE, and MLE. You practise Coding Interview Prep with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Coding Interview Prep?
No prior experience is required. Coding Interview Prep on CoddyKit is structured for beginners through advanced learners; this is — lesson 4 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “Submit and Read Your First Verdict” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Coding Interview Prep lesson?
Yes. Every Coding Interview Prep lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- What Competitive Programming Really Is
- Codeforces, LeetCode & AtCoder Tour
- Decode the Problem Statement
- Submit and Read Your First Verdict