# Create two Counters: c1 = Counter({'x': 3, 'y': 1}) and c2 = Counter({'x': 1, 'y': 2})

Canonical URL: <https://datadriven.io/problems/create-two-counters-c1-counterx-3-y-1-and-c2-4f20377d>

Domain: Python · Difficulty: medium

## Problem

Create two Counters: c1 = Counter({'x': 3, 'y': 1}) and c2 = Counter({'x': 1, 'y': 2}). Print the result of c1 + c2 and c1 - c2.

## Related

- [All practice problems](https://datadriven.io/problems)
- [Mock interview mode](https://datadriven.io/interview/create-two-counters-c1-counterx-3-y-1-and-c2-4f20377d)
- [Python Interview Questions](https://datadriven.io/python-interview-questions)
- [Data Engineering Interview Prep Guide](https://datadriven.io/data-engineer-interview-prep)
- [Daily Challenge](https://datadriven.io/daily)

---

Source: DataDriven (https://datadriven.io). 100% free data engineering interview prep. Live code execution against Postgres 16, Python 3.11, and Spark sandboxes. No paywall, no premium tier, no signup gate.