import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a,b,c,d; double result = 0.0; a = sc.nextInt(); b = sc.nextInt(); c = sc.nextInt(); d = sc.nextInt(); result = a*0.2 + b*0.1 + c*0.2 + d*0.5; System.out.println(String.form...