string input;
using (var sr = new System.IO.StreamReader("../inputs/day6.txt"))
    input = sr.ReadToEnd();

var startPop = input.Split(",").Select(int.Parse).ToList();
var pop = new long[9];

foreach (var fish in startPop)
    pop[fish] += 1;

for (int i = 0; i < 256; i++)
{
    long newFishes = pop[0];

    for (int j = 0; j < 8; j++)
        pop[j] = pop[j + 1];

    pop[8] = newFishes;
    pop[6] += newFishes;

    if (i == 79)
        Console.WriteLine(pop.Sum());
}

Console.WriteLine(pop.Sum());