ProgBasicsExam1and2December2018-E05trekkingMania

import java.util.Scanner;

public class E05trekkingMania {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        double peopleInGroup1 = 0;
        double peopleInGroup2 = 0;
        double peopleInGroup3 = 0;
        double peopleInGroup4 = 0;
        double peopleInGroup5 = 0;

    int n = Integer.parseInt(scanner.nextLine());
        for (int i = 0; i < n; i++) {
      int quantityPeopleInGroup = Integer.parseInt(scanner.nextLine());

            if(quantityPeopleInGroup <= 5){
                peopleInGroup1+=quantityPeopleInGroup;
            }

            else if(quantityPeopleInGroup >= 6 && quantityPeopleInGroup <= 12){
                peopleInGroup2+=quantityPeopleInGroup;
            }

            else if(quantityPeopleInGroup >= 13 && quantityPeopleInGroup <=25){
                peopleInGroup3+=quantityPeopleInGroup;
            }

            else if(quantityPeopleInGroup >= 26 && quantityPeopleInGroup <=40){
                peopleInGroup4+=quantityPeopleInGroup;
            }

            else if(quantityPeopleInGroup >= 40){
                peopleInGroup5+=quantityPeopleInGroup;
            }

        }

        double sum = peopleInGroup1 + peopleInGroup2 + peopleInGroup3 + peopleInGroup4 + peopleInGroup5;

            System.out.printf("%.2f%%%n", ( peopleInGroup1/ sum ) * 100);
            System.out.printf("%.2f%%%n", (peopleInGroup2 / sum) * 100);
            System.out.printf("%.2f%%%n", (peopleInGroup3 / sum) * 100);
            System.out.printf("%.2f%%%n", (peopleInGroup4 / sum) * 100);
            System.out.printf("%.2f%%%n", (peopleInGroup5 / sum) * 100);

    }
}