# 27: Climb stairs

Given a staircase with a `number`

of steps. Count how many `distinct`

ways can you climb the stairs. In one step, you can climb `one`

or `two`

steps

`Example 1`

```
Input: 1
Output: 1
```

Explanation: One way to go up the stairs

`Example 2`

```
Input: 2
Output: 2
```

Explanation: Two ways climb the stairs:

- Climbing by one step
- Climbing by two steps