program change;
var
s:string;
i:integer;
begin
readln(s);
for i:= 1 to length(s) do
if s[i] = ',' then
s[i]:= '.';
writeln(s);
end.
program change;
var
s:string;
i:integer;
begin
readln(s);
for i:= 1 to length(s) do
if s[i] = ',' then
s[i]:= '.';
writeln(s);
end.