# Testa

# Case 0

```test
> 0
> q
0
```

# Test 1

```test
> 1
> 1
> q 
1
```

# Test 2

```test
> -2
> -1
> 0
> 1
> 2
> q
0
```

# Test 3

```test
> -2
> -1
> 0
> 1
> q
-0.5
```

# Test 3

```test
> 10
> 30
> 10
> 0
> q
12.5
```