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# Kth Smallest Number in M Sorted Lists (medium)

## Problem Statement

Given ‘M’ sorted arrays, find the K’th smallest number among all the arrays.

**Example 1**:

```
Input: L1=[2, 6, 8], L2=[3, 6, 7], L3=[1, 3, 4], K=5
Output: 4
Explanation: The 5th smallest number among all the arrays is 4, this can be verified from
the merged list of all the arrays: [1, 2, 3, 3, 4, 6, 6, 7, 8]
```

**Example 2**:

```
Input: L1=[5, 8, 9], L2=[1, 7], K=3
Output: 7
Explanation: The 3rd smallest number among all the arrays is 7.
```

## Try it yourself

Try solving this question here:

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