uses crt;
const n=6;
var a:array[1..n,1..n] of integer;
i,j,k:byte;
begin
clrscr;
randomize;
writeln('Матрица A:');
for i:=1 to n do
begin
for j:=1 to n do
begin
a[i,j]:=random(50)-25;
write(a[i,j]:4);
end;
writeln;
end;
writeln;
writeln('Таблица TAB:');
for i:=1 to n do
begin
k:=0;
for j:=1 to n do
if a[i,j]<0 then
begin
k:=1;
write(sqr(a[i,j]):4);
end;
if k=0 then write('В строке ',i,' отрицательных нет');
writeln;
end;
readln
end.