min:=n+1;
k:=1;
for j:=1 to m do
begin
t:=0;
for i:=1 to n do if (a[i,j]=' ') and (i mod 2 = 0) then inc(t);
if t<min then
begin
min:=t;
k:=j;
end;
end;
writeln('Столбец ',k);
min:=n+1;
k:=1;
for j:=1 to m do
begin
t:=0;
for i:=1 to n do if (a[i,j]=' ') and (i mod 2 = 0) then inc(t);
if t<min then
begin
min:=t;
k:=j;
end;
end;
writeln('Столбец ',k);