Fitness Center

import java.io.PrintStream;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int visitors = Integer.parseInt(scanner.nextLine()),
                back = 0,
                chest = 0,
                legs = 0,
                abs = 0,
                proteinBar = 0,
                proteinShake = 0;
        String action;

        for (int i = 0; i < visitors; i++) {
            action = scanner.nextLine();
            switch (action) {
                case "Back" -> back++;
                case "Chest" -> chest++;
                case "Legs" -> legs++;
                case "Abs" -> abs++;
                case "Protein bar" -> proteinBar++;
                default -> proteinShake++;
            }
        }

        System.out.printf(
                """
                        %d - back
                        %d - chest
                        %d - legs
                        %d - abs
                        %d - protein shake
                        %d - protein bar
                        %.2f%% - work out
                        %.2f%% - protein
                        """
                , back, chest, legs, abs, proteinShake, proteinBar,
                100.0 * (back + chest + legs + abs) / visitors,
                100.0 * (proteinShake + proteinBar) / visitors
        );
    }
}