using System;
using System.Linq;
public class Program
{
public static void Main()
int[] arr1 = new int [8];
for (int i = 0; i < arr1.Length; i++)
arr1[i] = 3*i;
Console.WriteLine(arr1[i]);
}
int[] arr2= new int [8];
for (int j = 0; j < arr2.Length; j++)
arr2[j] = j*5;
Console.WriteLine(arr2[j]);