package com.thealgorithms.others;
import java.util.Scanner;
public final class RootPrecision {
private 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;
}
}