Snowmen=bool

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _02.Snowmen
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] snowmens = Console.ReadLine().Split().Select(int.Parse).ToArray();
            bool[] deadSnowmens = new bool[snowmens.Length];
            while (true)
            {
                int count = deadSnowmens.Where(x => !x).Count();
                for (int i = 0; i < snowmens.Length; i++)
                {
                    if (deadSnowmens.Where(x => !x).Count() == 1)
                    {
                        return;
                    }
                    int attacker = i;
                    int defender = snowmens[i] % count;
                    if (deadSnowmens[i])
                    {
                        continue;
                    }
                    int difference = Math.Abs(attacker - defender);
                    if (difference == 0)
                    {
                        Console.WriteLine($"{attacker} performed harakiri");
                        deadSnowmens[attacker] = true;
                    }
                    else
                    {
                        if (difference % 2 == 0)
                        {
                            if (!deadSnowmens[defender])
                            {
                                deadSnowmens[defender] = true;
                            }
                            Console.WriteLine($"{attacker} x {defender} -> {attacker} wins");
                        }
                        else
                        {
                            deadSnowmens[attacker] = true;
                            Console.WriteLine($"{attacker} x {defender} -> {defender} wins");
                        }
                    }
                }
                snowmens = snowmens.Where((x, index) => deadSnowmens[index] == false).ToArray();
                deadSnowmens = deadSnowmens.Where(x => !x).ToArray();
            }
        }
    }
}