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**Stomach_ache**

Given a matrix consists of 0 and 1, find the distance of the nearest 0 for each cell.

The distance between two adjacent cells is 1.**Example 1: **

Input:

0 0 0 0 1 0 0 0 0Output:

0 0 0 0 1 0 0 0 0

**Example 2: **

Input:

0 0 0 0 1 0 1 1 1Output:

0 0 0 0 1 0 1 2 1

**Note:**

- The number of elements of the given matrix will not exceed 10,000.
- There are at least one 0 in the given matrix.
- The cells are adjacent in only four directions: up, down, left and right.

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