import java.util.*;
 
class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner (System.in);
		System.out.println("Sistema Harmônico");
		System.out.println("Digite em até que número a série irá");
		int numero = scan.nextInt();
		double numHarmonico = 0;
		for (int i = 1; i <= numero; i++) numHarmonico += 1.0 / i;
		System.out.printf("%.2f", numHarmonico);
		scan.close();
	}
}
 
//https://pt.stackoverflow.com/q/446540/101

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