题解 | #数列的和#
数列的和
http://www.nowcoder.com/practice/fe19f8a78a5148018f4be53ae9b5e11e
写个能看的懂得吧！！！
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
while(sc.hasNext()){
double n = sc.nextDouble();
int m = sc.nextInt();
double ans = 0;
for (int i = 0; i < m; i++) {
ans += n;
n = Math.sqrt(n);
}
System.out.printf("%.2f",ans);
System.out.println();
}
}
}
