##
var (m, n) := ReadInteger2;
var a := MatrRandom(m, n, -99, 99);
a.Println(4);
Writeln;
for var j := 0 to n - 1 do
for var i := 0 to (m - 1) div 2 do
Swap(a[i, j], a[m - i - 1, j]);
a.Println(4)
