# Matrix

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

Two positive integers n and m are given. Print the matrix that consists of n lines and m columns, filled with positive integers from 1 to n * m, as shown in the sample.

## Input

Two positive integers n and m (1 ≤ n, m ≤ 100).

## Output

Print the required matrix.

## Examples

Input #1

Answer #1

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