import java.util.ArrayList; import java.util.List; import java.util.Scanner; public class Main { public static final double R2 = Math.pow(2, 0.5); public static void main(String[] args) { Scanner sc = new Scanner(System.in); List input = new ArrayList<>(); while (sc.hasNext()) { input.add(sc.nextLine()); } System.out.println(solve(input)); sc.close(); } public static int solve(List in) { double x = Double.valueOf(in.get(0).split(" ")[0]); double y = Double.valueOf(in.get(0).split(" ")[1]); double r = Double.valueOf(in.get(0).split(" ")[2]); double D = r * R2 + Math.abs(x) + Math.abs(y); return new Double(D).intValue() + 1; } }