# RE8 | openai/gpt-5.6-luna | run 2

## Prompt

Minimize total time to finish these tasks, one at a time, respecting dependencies: A (2h, no deps); B (3h, needs A); C (1h, no deps); D (2h, needs B and C). Give a valid order and the total time.

## Response

A valid order is:

1. **A** — 2 hours  
2. **C** — 1 hour  
3. **B** — 3 hours  
4. **D** — 2 hours  

**Total time: 8 hours.** Since tasks are completed one at a time, the total is fixed; this order satisfies all dependencies.

Would you like the order optimized for starting with the shortest available task instead?
