, ? s? ?tr??s??r? ??t? str??t?r? s??r??? ?s ?ss??t???? Pr????? ?????t??? s???s t??t t??s
, ?? ??????t?t? st?t? r?st?r?t??? r?q??r?? ?? s????st???t?? s??r?? str?t?????? ??? ????t? ?????? ??r?????s ??r?????s ?r? st????r? ?ttr???t?? ??r?????s ?s ??s?r???? ?? ????? ??? ?ttr???t? ???t???s t?? ?????? ??? t?? ???str???ts r???t?? t? t?? ??r?????? ???s? ???str???ts ?r? ??st?? ????r???? t? t???r ?ss????t?? ?????? ????ts? ?????? ??rr??t?? ???rs
, ? ????s s??? r?s??ts ??t? t??s ?r??r??? t?? ?????r ?? ???tr???s? ??t ??s?????? ??r?? ?s ?????s ??r? s? < a k s??? t??t ??? t?? ????r????s a j ? a i ??r i < j ?r? ??st???t? ?? ??? ?ss??? a 1 = 0? ???? a k ?s t??
, ts? t?? s?rt??? ???str???ts ??? s?ts? ????? ? ????s s??? r?? s??ts ??r t?? t?r?? ?????s? ??rst ?????? ?s t?? st????r? ???????r? ?? ?? ?????rs ???r ? ????s? ??st ?????? ?s t?? r?s??t ??r t?? ??st ??s? ?? ??r???? ??r????s t????? ??t? t??t t??s ??st???? ?s ??s??? s?