java——ZZULIOJ_1051: 平方根的和

1051: 平方根的和

import java.util.*;
public class Main {
    public static void main(String args[]){
        Scanner cin = new Scanner(System.in);
        int m;
        double n;
        n = cin.nextDouble();
        m = cin.nextInt();
        double  sum = 0;
        for(int i = 0; i < m; i ++){
            sum+=n;
            n=Math.sqrt(n);
        }
        System.out.printf("%.2f",sum);
    }
}