begin //PascalABC.NET
var x, y: real;
Read(x);
if x <= 0 then Print(0)
else Print(x > 1 ? x * x : x)
end.
begin //PascalABC.NET
var x, y: real;
Read(x);
if x <= 0 then Print(0)
else Print(x > 1 ? x * x : x)
end.