function r (s : string) : string;
var
i,l : integer;
r : boolean;
rez : string;
begin
l := Length (s);
i := l;
r := false;
While (i > 0) and (not r) do
begin
if (s[i] = '.') or (s[i] = '/') or (s[i] = '\') then
r := true
else
rez := s[i] + rez;
i := i -1;
end;
Result := rez;
end;
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