Problem SpecificationTwo Sum

Given an array of integers nums and an integer target, return the indices of the two numbers such that they add up to target. Return an empty list [] if no such pair exists.

solution.py

Python 3.12 (Isolated Sandbox)

def two_sum(nums: list[int], target: int) -> list[int]:
    # Write your solution here
    pass

Session ID---

Attempts0

Hint TierNone

Ready for Automated Triage

Submit your solution to execute in the secure Python sandbox. If any test case fails, the AI coach classifies the root cause and delivers progressive, non-spoiler hints.

System // Automated Algorithmic Triage

Diagnose failures without spoiling the answer.

An automated AI coaching sandbox that executes your code against rigorous test cases, classifies bug failure patterns, and delivers progressive hint tiers to help you solve it yourself.

Ready for Automated Triage

Analyzing Submission

Diagnose failures without spoiling the answer.