Bài 6

 avatar
unknown
java
a year ago
332 B
6
Indexable
import java.util.Scanner;

public class P1 {

	public static float Sol(int n) {
		float s = 0;

		for (int i = 1; i <= n; i++)
			s += 1.0 / (i * (i + 1));

		return s;
	}

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();

		System.out.println(Sol(n));
	}
}
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