Logistics

import java.util.Scanner;

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

        double weight1 = 0;
        double weight2 = 0;
        double weight3 = 0;
        double total = 0;
        double average = 0;

        int n = Integer.parseInt(scanner.nextLine());
        for (int i = 0; i <n ; i++) {
            int weight = Integer.parseInt(scanner.nextLine());
            if (weight<=3){
                weight1 += weight;
            } else if ((4<=weight) && (weight<=11)){
                weight2 += weight;
            } else if (weight>=12){
                weight3 += weight;
            } total = weight1 + weight2 + weight3;
            average = ((weight1*200) + (weight2*175) + (weight3*120))/total;
        }
        System.out.printf("%.2f%n", average);
        System.out.printf("%.2f%%%n", (weight1/total)*100);
        System.out.printf("%.2f%%%n", (weight2/total)*100);
        System.out.printf("%.2f%%%n", (weight3/total)*100);
    }
}