Problem

In a robotic arm controller, it is crucial to manage error states to ensure patient safety. You are tasked with implementing a function that takes a list of error states and returns a list of safe commands that can be executed. Each error state is represented by an integer where positive values indicate safe commands and negative values indicate errors.

Input

• A list of integers error_states where:
  • error_states[i] > 0 indicates a safe command.
  • error_states[i] <= 0 indicates an error state.

Output

• A list of integers representing the safe commands.

Examples

Example 1:

Input: error_states = [1, -1, 2, -3, 3]
Output: [1, 2, 3]

Explanation: The safe commands are 1, 2, and 3.

Example 2:

Input: error_states = [-1, -2, -3]
Output: []

Explanation: There are no safe commands in this case.

Constraints

• 1 <= error_states.length <= 1000
• -1000 <= error_states[i] <= 1000