package c01_Simple_Calculations;

        import java.util.Scanner;

public class p10_RadiansToDegrees {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        double rad = Double.parseDouble(scan.nextLine());

        double degrees = Math.toDegrees(rad);


        System.out.printf("%.0f", degrees);


    }

}