package com.company;
import java.util.Locale;
public class Fff {
    public static void main(String[] args) {
        boolean IsCorrect = true, Repeat = true;
        Double EPS = 0.0, X = 0.0, S1, S2, P = 0.0, Powww, Check;
        int n = 0;
        java.util.Scanner enter = new java.util.Scanner(System.in).useLocale(Locale.US);
        do {
            try {
                IsCorrect = true;
                System.out.println("Enter X ( X > -1 )");
                X = Double.parseDouble(enter.next());
                if (X<=-1) {
                    IsCorrect = false;
                    System.out.println("Incorrect X. Try again");
                }
            } catch (NumberFormatException ignore) {
                System.out.println("Input the number!");
                IsCorrect = false;
            }
        } while (!IsCorrect);
        do {
            try {
                IsCorrect = true;
                System.out.println("Enter  EPS ( 0 < EPS < 1)");
                EPS = Double.parseDouble(enter.next());
                if ((EPS > 1) || (EPS <= 0)) {
                    IsCorrect = false;
                    System.out.println("Incorrect EPS. Try again");
                }
            } catch (NumberFormatException ignore) {
                System.out.println("Input the number!");
                IsCorrect = false;
            }
        } while (!IsCorrect);
        while (IsCorrect) {
            Powww = 1.0;
            if (n > 0) {
                for (int i = 0; i <= n; i++) {
                    Powww = Powww * X;
                }
                S2 = (Powww / (n + 1));
                S1 = ((Powww / X) / n);
                Check = S2 - S1;
                if (Check < 0) {
                    Check = -(Check);
                }
                if (Check >= EPS) {
                    IsCorrect = true;
                    n++;
                    if ((n) % 2 == 0) {
                        P = P - S2;
                    } else {
                        P = P + S2;
                    }
                } else {
                    IsCorrect = false;
                }
            } else {
                P = X;
                n++;
            }
        }
        System.out.format("LN(1+X)= %.5f%n", P);
        System.out.println("N= " + (n));
    }
}