import java.util.Arrays;
import java.util.Scanner;

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

        String[] fireCells = scanner.nextLine().split("\\#+");
        int water = Integer.parseInt(scanner.nextLine());
        String fireType = "";
        int fireValue = 0;
        double totalEffort = 0;
        int totalWater=water;
        double totalCellsSpended=0;


        for (int i = 0; i < fireCells.length ; i++) {
           String [] currentFire =  fireCells[i].split("\\s+\\= ");
           fireType=currentFire[0];
           fireValue=Integer.parseInt(currentFire[1]);

            if (fireTypeValidation(fireType, fireValue)){
                effortCalculator(fireValue,totalEffort);
                waterSpending(totalWater,fireValue);
                totalCells(fireValue,totalCellsSpended);
            }
        }
    }


    static boolean fireTypeValidation (String fireType, int fireValue){
        boolean correctType = false;

        if (fireType.equalsIgnoreCase("high")) {
            if (81 <= fireValue && fireValue <= 125) {
                correctType = true;
            }
        } else if (fireType.equalsIgnoreCase("medium")) {
            if (51 <= fireValue && fireValue <= 80) {
                correctType = true;
            }
        } else if (fireType.equalsIgnoreCase("low")) {
            if (1 <= fireValue && fireValue <= 50) {
                correctType = true;
            }
        }
        return correctType;
    }



    static void effortCalculator (int fireValue,double totalEffort){
        double effort = fireValue*0.25;
        totalEffort+= effort;
    }

    static void waterSpending (int totalWater, int fireValue){
        totalWater -= fireValue;
    }

    static void totalCells (int fireValue,double totalCellsSpended){
        totalCellsSpended=+fireValue;
    }
}