public class MyClass {
    public static void main(String args[]) {
        java.util.Scanner scanner = new java.util.Scanner(System.in);
        int numberOfBalls = scanner.nextInt();
        String color = null;
        double sum = 0.0;
        for (int i = 0; i < numberOfBalls; i++) {
            color = scanner.next();
            switch(color) {
                case "red" : sum = sum + 5; break;
                case "orange" : sum += 10; break;
                case "yellow" : sum += 15; break;
                case "white" : sum += 20; break;
                case "black" : sum = Math.floor(sum/2.0);
                default : sum = sum;
            }
        }
        System.out.printf("Sum : %.0f", sum);
    }
}


/*
22
black
red
yellow
red
white
black
blue
red
orange
orange
black
green
red
purple
white
white
orange
orange
red
blue
black
white
*/