import java.util.Scanner;import java.io.*;public class Sred { public static void main(String[] args) { Scanner in = new Scanner(System.in); int n; System.out.print("n="); n = in.nextInt(); int[] a = new int[n]; int sum = 0; for (int i = 0; i < n; i++) { a[i] = in.nextInt(); sum += a[i]; } float sred = (float)sum / n; System.out.printf("Среднее арифметическое: %.1f ", sred); } }