var n: double; begin readln(n); writeln(nn(n+1)/(2n-1)/(2n):0:9); end.
Home » Codes bzoj4001.pas April 28, 2015 · 1 min · laekov var n: double; begin readln(n); writeln(nn(n+1)/(2n-1)/(2n):0:9); end. Comments