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# Little Matrix Multiplication

Limits 1s, 512 MB

Given two 2×2 matrices, calculate the product of the two matrices.

The product of two 2×2 matrices will produce another 2×2 matrix where:

``````A = [ A₁₁ A₁₂
A₂₁ A₂₂ ]
``````
``````B = [ B₁₁ B₁₂
B₂₁ B₂₂ ]
``````
``````C = A × B = [ C₁₁ C₁₂
C₂₁ C₂₂ ]
``````
``````C₁₁ = A₁₁ ×  B₁₁ + A₁₂ × B₂₁
C₁₂ = A₁₁ ×  B₁₂ + A₁₂ × B₂₂
C₂₁ = A₂₁ ×  B₁₁ + A₂₂ × B₂₁
C₂₂ = A₂₁ ×  B₁₂ + A₂₂ × B₂₂
``````

For example:

``````A = [ 2 3
4 5 ]
``````
``````B = [ 5 6
7 8 ]
``````
``````C = A × B = [ 31 36
55 64 ]
``````

## Input

The input contains two matrices as follows:

``````A₁₁ A₁₂
A₂₁ A₂₂
B₁₁ B₁₂
B₂₁ B₂₂
``````

The value of each of these 8 integers is non-negative and less than 100.

## Output

Print the product of the two matrices as follows:

``````C₁₁ C₁₂
C₂₁ C₂₂
``````

## Sample

InputOutput
```2 3
4 5
5 6
7 8```
```31 36
55 64```

Discussion
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