var
f,g:text;
c:char;
begin
assign(f,'c:\output.txt');
assign(g,'c:\input.txt');
reset(f);
rewrite(g);
while not EOF(f) do
begin
read(f,c);
if c='!' then
write(g,'.')
else write(g,c);
end;
close(f);
close(g);
end.