uses crt;
type arr=array[1..100,1..100]of integer;
var i,j,m,k,l:integer;
a:arr;
procedure swap(var a:arr;m,k1,k2:integer);
var b,j:integer;
begin
for j:=1 to m do
begin
b:=a[k1,j];
a[k1,j]:=a[k2,j];
a[k2,j]:=b;
end;
end;
begin
clrscr;
write('M -> ');
readln(m);
for i:=1 to m do for j:=1 to m do
begin
write('A[',i,' ',j,']: ');
readln(a[i,j]);
end;
writeln('Исходная матрица');
for i:=1 to m do
begin
for j:=1 to m do write(a[i,j],' ');
writeln;
end;
write('K,L -> ');
readln(k,l);
if (k<=m) and (l<=m) and (k<>l) then
begin
swap(a,m,k,l);
writeln('Преобразованная матрица');
for i:=1 to m do
begin
for j:=1 to m do write(a[i,j],' ');
writeln;
end;
end else write('Некорректные данные, операция невозможна');
readln;
end.