using System;

public class Program

{

    static void maarach  (int []a,int[]b,int []c)

    {

        for (int i=0;i <a.Length;i++)

        {

            for (int j=0;j<b.Length;j++)

                c [i]+=a[i]*b [j];

        }

    }

    public static void Main()

    {

        int []a={1,2,3,4};

        int []b={2,3,4,5};

        int []c=new int [a.Length];

        maarach (a,b,c);

        for (int i=0;i <c.Length;i++)

        Console.WriteLine  (c [i]);

    }

}