package test;

import java.util.ArrayList;
import java.util.Scanner;

public class test1 {

	public static void main(String args[]) {
		// TODO Auto-generated method stub

		Scanner sc = new Scanner(System.in);
		ArrayList<Double> arrList = new ArrayList<Double>();

		while (true) {
			double x = Double.parseDouble(sc.nextLine()); /* arrList.add(Double.parseDouble(sc.nextLine())); */
			System.out.println("Nhap them Y / N");
			arrList.add(x); /*Thieu add vao*/
			if(sc.nextLine().equalsIgnoreCase("N")) {
				break;
			}
		}
		double res = 0;
		for (int i = 0; i < arrList.size(); i++) {
			/* double num = arrList.get(i); */
			/* tinh tong cac day so, khong co in ra gi het System.out.println(num); */
			res += arrList.get(i);
		}
		System.out.println("Tong cua day so la: " + res);
	}
}