Const n=4;
 Var a:array[1..n]of real;
       i:byte;
 Begin
     For i:=1 to n do
       Read(a[i]);
     For i:=1 to n do
       Begin
       If a[i]<0 then a[i]:=a[i]+0.5;
       If (a[i]>0) and (frac(a[i])=0) then a[i]:=0.1;
       Writeln(a[i]:5:2);
       End;
End.