package test.wangyi; import java.util.Scanner; /**  *   * Description: netease coding test 1.  */ public class Main { public static void solve() { Scanner reader = new Scanner(System.in); while(reader.hasNext()) { int R2 = Integer.parseInt(reader.nextLine()); int res = 0;//top bottom left right int half = R2 / 2; if(isSquare(R2)) { res += 4; } for(int i = 1; i * i <= half; i ++ ) { if(isSquare(R2 - i * i)) { if(i * i == half) { res -= 4; } res += 8; } } System.out.println(res); } reader.close(); } public static boolean isSquare(int n) { double m = Math.sqrt(n); int a = (int)m; if(a * a == n) { return true; } else { return false; } }   public static void main(String[] args) {  Main.solve();   } }