package Others;

import java.util.Scanner;

public class RootPrecision {

 public static void main(String[] args) {
 // take input
 Scanner scn = new Scanner(System.in);

 // N is the input number
 int N = scn.nextInt();

 // P is precision value for eg - P is 3 in 2.564 and 5 in 3.80870.
 int P = scn.nextInt();
 System.out.println(squareRoot(N, P));

 scn.close();
 }

 public static double squareRoot(int N, int P) {
 // rv means return value
 double rv;

 double root = Math.pow(N, 0.5);

 // calculate precision to power of 10 and then multiply it with root value.
 int precision = (int) Math.pow(10, P);
 root = root * precision;
 /*typecast it into integer then divide by precision and again typecast into double
 so as to have decimal points upto P precision */

 rv = (int) root;
 return rv / precision;
 }
}