8672. Square root

Given a positive integer n. Find its square root.

Input. One positive integer n (1 ≤ n ≤ 10¹⁶).

Output. Print the square root of the given number rounded to 6 decimal places.

Sample input 1	Sample output 1
10	1.000000
Sample input 2	Sample output 2
1000000	1000.000000

SOLUTION

mathematics

Algorithm analysis

To compute the square root, use the sqrt function from the <math.h> library.

Algorithm implementation

Read the input value of x.

scanf("%lf",&x);

Compute and print the square root of the number x.

y = sqrt(x);

printf("%.6lf\n",y);

Java implementation

import java.util.*;

public class Main

{

public static void main(String[] args)

{

Scanner con = new Scanner(System.in);

double x = con.nextDouble();

double y = Math.sqrt(x);

System.out.printf("%6f\n",y);

con.close();

}

}

Python implementation

import math

Read the input value of x.

x = float(input())

Compute and print the square root of the number x.

y = math.sqrt((x))

print(y)