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();

      	// 直接全部调用math进行运算即可
        //write your code here......
        double[] d = {
                Math.abs(num),
                Math.sqrt(num),
                Math.log(num),
                Math.sin(num)
        };
        for (double dd : d) System.out.println(dd);

    }
}