using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        int[][] grid = new int[][] {

            new int[]{ 1, 0, 1, 1 },

            new int[]{ 1, 1, 0, 0 },

            new int[]{ 0, 0, 1, 0 },

            new int[]{ 1, 0, 1, 1 },

        };

        bool result = grid

         .SelectMany((line, row) => line.Select((item, column) => (item, diag : row + column)))

         .Where(pair => pair.item == 1)

         .GroupBy(pair => pair.diag)

         .Any(group => group.Count() > 1);

        Console.WriteLine(result);  

        // Text based

        string windfarm = "0100110010000100";

        int n = (int)Math.Sqrt(windfarm.Length);

        bool result2 = windfarm

         .Select((c, index) => (item : c - '0', diag : index / n + index % n))

         .Where(pair => pair.item == 1)

         .GroupBy(pair => pair.diag)

         .Any(group => group.Count() > 1);

        Console.WriteLine(result2); 

    }

}