using System;

​

public class Program

{

    public static void Main(string[] args)

    {

        var input1 = new int[] { 1, 2, 3, 4, 5 };

        var input2 = new int[] { 3, 2, 1 };

        var input3 = new int[] { 5, 1, 8, 6 };

​

        Process(input1);

​

        Process(input2);

​

        Process(input3);                       

    }

​

    public static void Process(int[] input)

    {

        Console.WriteLine(String.Join(",", input));

​

        var output = SumArrySimple(input);

        Console.WriteLine(String.Join(",", output));

​

        output = SumArrayNoDivision(input);

        Console.WriteLine(String.Join(",", output));

​

        Console.WriteLine("\n");

    }

​

    public static int[] SumArrySimple(int[] input)

    {

        var prod = 1;

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

        {

            prod *= input[i];

        }

​

        var output = new int[input.Length];

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

        {

            output[i] = prod / input[i];

        }

​

        return output;

    }

​

    public static int[] SumArrayNoDivision(int[] input)

    {

        var output = new int[input.Length];        

​

        int temp = 1;

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

        {

            output[i] = temp;

            temp *= input[i];

        }

​

        temp = 1;

        for (int i = input.Length - 1; i >= 0; i--)

        {

            output[i] *= temp;

            temp *= input[i];

        }

​

        return output;

    }

}