var
i, j, r: integer;
a: array [1 .. 8, 1 .. 8] of integer;
b1: array [1 .. 8] of integer;
b2: array [1 .. 8] of integer;
begin
randomize;
for i := 1 to 8 do
for j := 1 to 8 do
begin
a[i, j] := random(90);
b1[i] := a[i, i];
b2[i] := a[i, 8 - i + 1];
end;
writeln('массив');
for i := 1 to 8 do
begin
for j := 1 to 8 do
write(a[i, j]:3);
writeln;
end;
for i := 1 to 8 div 2 do
begin
r := b1[i];
b1[i] := b1[8 - i + 1];
b1[8 - i + 1] := r;
end;
for i := 1 to 8 div 2 do
begin
r := b2[i];
b2[i] := b2[8 - i + 1];
b2[8 - i + 1] := r;
end;
writeln('новый массив');
for i := 1 to 8 do
begin
for j := 1 to 8 do
begin
a[i, i] := b2[i];
a[i, 8 - i + 1] := b1[i];
write(a[i, j]:3);
end;
writeln;
end;
readln;
end.