//円周率の値
class test
{
public static void main(string args[]) throws IOException
{
System.out.println("円周率の値はいくつですか?")

BufferedReader br =
new BufferedReader(new InputStreamReader(System.in));

String str =br.readLine();

int num =Integer.parseInt(str);

System.out.println("円周率は"+ num +"");

}
}