//5.   Игра на интервали
public class MyClass {
    public static void main(String args[]) {
       java.util.Scanner scanner = new java.util.Scanner(System.in);
       int turns = scanner.nextInt();

       double finalScore = 0.0;

       int numbersFrom0to9 = 0;
       int numbersFrom10to19 = 0;
       int numbersFrom20to29 = 0;
       int numbersFrom30to39 = 0;
       int numbersFrom40to50 = 0;
       int numbersInvalid = 0;

       int number = 0;

       for (int i = 1; i <= turns; i++) {
           number = scanner.nextInt();
           if (number >= 0 && number <= 9) {
               numbersFrom0to9++;
               finalScore += 0.2 * number;
           }
            else if (number >= 10 && number <= 19) {
               numbersFrom10to19++;
               finalScore += 0.3 * number;
           }
           else if (number >= 20 && number <= 29) {
               numbersFrom20to29++;
               finalScore += 0.4 * number;
           }
           else if (number >= 30 && number <= 39) {
               numbersFrom30to39++;
               finalScore += 50;
           }
           else if (number >= 40 && number <= 50) {
               numbersFrom40to50++;
               finalScore += 100;
           }
           else {
               numbersInvalid++;
               finalScore = finalScore * 0.5;
           }
       }
       System.out.printf("%.2f\n",finalScore);
       System.out.printf("From 0 to 9: %.2f%%\n", (double)numbersFrom0to9/turns * 100);
       System.out.printf("From 10 to 19: %.2f%%\n", (double)numbersFrom10to19/turns * 100);
       System.out.printf("From 20 to 29: %.2f%%\n", (double)numbersFrom20to29/turns * 100);
       System.out.printf("From 30 to 39: %.2f%%\n", (double)numbersFrom30to39/turns * 100);
       System.out.printf("From 40 to 50: %.2f%%\n", (double)numbersFrom40to50/turns * 100);
       System.out.printf("Invalid numbers: %.2f%%\n", (double)numbersInvalid/turns * 100);
    }
}