Program mas;
Const
n = 6;
Var
a: array [1 .. n, 1 .. n] of byte;
s: word;
i, j: integer;
Begin
Write('Исходный массив: ');
For i := 1 to n do
begin
For j := 1 to n do
begin
a[i, j] := random(20);
Write(a[i, j]:3);
end;
Writeln;
end;
s := 0;
For j := 1 to n do
s := s + a[2, j];
Writeln('Сумма элементов 2-й строки = ', s);
End.