List the two main types of reinforcement learning.
The two main types of reinforcement learning are:
1. Positive Reinforcement Learning
2. Negative Reinforcement Learning
Complete the following task based on the instruction and optional input provided.### Instruction:
List the two main types of reinforcement learning.

### Output:
The two main types of reinforcement learning are:
1. Positive Reinforcement Learning
2. Negative Reinforcement Learning