package pl.edu.uwm.wmii.przemekdzienisiewicz.laboratorium01;
import java.util.Scanner;

public class Main {

    public static int zadanie1(int n) {
        Scanner input = new Scanner(System.in);
        int suma = 0;
        for (int i=1; i<=n;i++) {
            System.out.println("Podaj liczbe");
            int a= input.nextInt();
            suma += a;
        }
        return suma;
    }

    public static int zadanie2(int n) {
        Scanner input = new Scanner(System.in);
        int suma = 1;
        for (int i=1; i<=n;i++) {
            System.out.println("Podaj liczbe");
            int a= input.nextInt();
            suma *= a;
        }
        return suma;
    }

    public static int zadanie3(int n) {
        Scanner input = new Scanner(System.in);
        int suma = 1;
        for (int i=1; i<=n;i++) {
            System.out.println("Podaj liczbe");
            int a= input.nextInt();
            if(a < 0) a*(-1);
            suma += a;
        }
        return suma;
    }

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        System.out.println("Początek");
        int suma = zadanie2(n);
        System.out.println(suma);
    }
}