seriessum

//by stack falling return type
public class sumofseries {
	public static double series(int num) {
		if(num==0) {
			return 0;
		}
		double res=series(num-1);
		return res+(num/(Math.pow(num, num)));
	}
	public static void main(String[] args) {
		System.out.println(series(14));
	}

}