hdu4552怪盗基德的挑战书&hdu3336Count the string【后缀数组求各前缀重复次数和】
ProblemDescriptionItiswellknownthatAekdyCoinisgoodatstringproblemsaswellasnumbertheoryproblems.Whengivenastrings,wecanwritedownallthenon-emptyprefixesofthisstring.Forexample:s:"abab"Theprefixesare:"a"