using System;

public class Program

{

    public static int LargestPerimeter(int[] nums) 

    {

        Array.Sort(nums);

        for (int i = nums.Length - 3; i >= 0; i--)

        {

            if (nums[i] + nums[i + 1] > nums[i + 2]) {

                return nums[i] + nums[i + 1] + nums[i + 2];

            }

        }

        return 0;

    }

    public static void Main()

    {

        Console.WriteLine("UniLecs");

        // tests

        Console.WriteLine(LargestPerimeter(new int[] { 2, 1, 2 })); // 5

        Console.WriteLine(LargestPerimeter(new int[] { 1, 2, 1 })); // 0

    }

}