1004 Financial Management

求平均数

 

import java.util.*;
public class Main {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		float sum = 0;
		for(int i = 0; i < 12; i++)
			sum += in.nextFloat();
		System.out.printf("$%.2f\n", sum/12);
	}
}