---
id: 697a49e6ff50d756c9b69366
title: "Challenge 189: 2026 Winter Games Day 10: Alpine Skiing"
challengeType: 29
dashedName: challenge-189
---

# --description--

Given a ski hill's vertical drop, horizontal distance, and type, determine the difficulty rating of the hill.

To determine the rating:

- Calculate the steepness of the hill by taking the drop divided by the distance.
- Then, calculate the adjusted steepness based on the hill type:
  - `"Downhill"`: multiply steepness by 1.2
  - `"Slalom"`: multiply steepness by 0.9
  - `"Giant Slalom"`: multiply steepness by 1.0

Return:

- `"Green"` if the adjusted steepness is less than or equal to 0.1
- `"Blue"` if the adjusted steepness is greater than 0.1 and less than or equal to 0.25
- `"Black"` if the adjusted steepness is greater than 0.25


# --hints--

`get_hill_rating(95, 900, "Slalom")` should return `"Green"`.

```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_hill_rating(95, 900, "Slalom"), "Green")`)
}})
```

`get_hill_rating(620, 2800, "Downhill")` should return `"Black"`.

```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_hill_rating(620, 2800, "Downhill"), "Black")`)
}})
```

`get_hill_rating(420, 1680, "Giant Slalom")` should return `"Blue"`.

```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_hill_rating(420, 1680, "Giant Slalom"), "Blue")`)
}})
```

`get_hill_rating(250, 3000, "Downhill")` should return `"Green"`.

```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_hill_rating(250, 3000, "Downhill"), "Green")`)
}})
```

`get_hill_rating(110, 900, "Slalom")` should return `"Blue"`.

```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_hill_rating(110, 900, "Slalom"), "Blue")`)
}})
```

`get_hill_rating(380, 1500, "Giant Slalom")` should return `"Black"`.

```js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_hill_rating(380, 1500, "Giant Slalom"), "Black")`)
}})
```

# --seed--

## --seed-contents--

```py
def get_hill_rating(drop, distance, hill_type):

    return drop
```

# --solutions--

```py
def get_hill_rating(drop, distance, hill_type):
    steepness = drop / distance

    if hill_type == "Downhill":
        steepness *= 1.2
    elif hill_type == "Slalom":
        steepness *= 0.9
    elif hill_type == "Giant Slalom":
        steepness *= 1.0

    if steepness <= 0.1:
        return "Green"
    elif steepness <= 0.25:
        return "Blue"
    else:
        return "Black"
```