uses crt;
var
dl, ch, n: integer;
text, text1: string;
label 1;
begin
clrscr;
writeln('Введите текст');
readln(text);
dl := length(text);
n := pos(' ', text);
1:
if n > 0 then
begin
Delete(text, n, 1);
insert('.', text, n);
dl := length(text);
if dl > 0 then
begin
n := pos(' ', text);
goto 1;
end
end;
writeln(text);
end.