const
n=4;
var
a:array[1..n,1..n] of integer;
i,j,s:integer;
begin
for i:=1 to n do
begin
for j:=1 to n do
begin
a[i,j]:=5-random(10);
write(' ',a[i,j]:3);
end;
writeln();
end;
writeln('--------') ;
for j:=1 to n do
begin
s:=0;
for i:=1 to n do
if a[i,j] <0 then s:=s+a[i,j];
writeln('Сумма в столбце ',j,'=',s);
end;
end.