题解 | #求绝对值，平方根，对数，正弦值#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        double num = scanner.nextDouble();
        System.out.println(absoluteValue(num));
        System.out.println(Math.sqrt(num));
        System.out.println(Math.log(num));
        System.out.println(Math.sin(num));
    }
    public static  double absoluteValue(double i)
    {
        return i>=0?i:(0-i);
    }
}