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# Smallest Number Range (hard)

## Problem Statement

Given ‘M’ sorted arrays, find the smallest range that includes at least one number from each of the ‘M’ lists.

**Example 1**:

```
Input: L1=[1, 5, 8], L2=[4, 12], L3=[7, 8, 10]
Output: [4, 7]
Explanation: The range [4, 7] includes 5 from L1, 4 from L2 and 7 from L3.
```

**Example 2**:

```
Input: L1=[1, 9], L2=[4, 12], L3=[7, 10, 16]
Output: [9, 12]
Explanation: The range [9, 12] includes 9 from L1, 12 from L2 and 10 from L3
```

## Try it yourself

Try solving this question here:

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