echo Problem 1. GCD of a whole matrix. Answer should be 5.
m 3 3
100	50	75
30	65	30
40	35	45
done

echo Problem 2. GCD of 1st row. Answer should be 25.
m 3 3
100	50	75
30	65	30
40	35	45
row 0
done

echo Problem 3. GCD of 3rd column. Answer should be 15.
m 3 3
100	50	75
30	65	30
40	35	45
column 2
done

echo Problem 4. GCD of two scalars. Answer should be 13.
row 26
column 39
done
quit
