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- function fib(s: ansistring): ansistring;
- var f, f1, f2: TLongNumber;
- i, n: integer;
- begin
- n := StrToInt(str);
- f1 := 0;
- f2 := 1;
- i := 1;
- while i <= n do begin
- f := f1 + f2;
- f1 := f2;
- f2 := f;
- i += 1;
- end;
- result := ToString(f, 10);
- end;
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