import std.algorithm, std.array, std.range;
import std.string, std.conv;
import std.math;
import std.stdio, std.typecons;

void main()
{
  auto c = readln.chomp.to!int;
  auto rd = readln.split.map!(to!double);
  auto ri = rd[0];
  auto ro = rd[1];

  auto r1 = (ro - ri) / 2;
  auto r2 = (ro + ri) / 2;

  writeln(r1, " ", r2);
  writefln("%f", PI * r1 ^^ 2 * 2 * PI * r2 * c);
}