using System;
using System.ComponentModel;
using System.IO;

namespace Contest
{
    class Program
    {
        private Scanner sc;
        private int N;
        private bool[] A;
        private long Mod = 1000000007;
        private long[] Memo;
        private int loop;
        public void Solve()
        {
            sc = new Scanner();
            N = sc.NextInt();
            A = new bool[N * N];
            loop = 1 << N;
            Memo = new long[N * loop];
            for (int i = 0; i < N; i++)
            {
                for (int j = 0; j < N; j++)
                {
                    A[ConvertA(i, j)] = sc.Next() == "1";
                }

                for (int j = 0; j < loop; j++)
                {
                    Memo[ConvertMemo(i, j)] = -1;
                }
            }
            Console.WriteLine(Calc(0, loop - 1));
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="i">i人目見てる</param>
        /// <param name="state">残ってる女性(bit)</param>
        /// <returns></returns>
        private long Calc(int i, int state)
        {
            if (i == N) return 1;
            if (Memo[ConvertMemo(i, state)] != -1)
            {
                return Memo[ConvertMemo(i, state)];
            }

            long res = 0;
            int bit = 1;
            for (int j = 0; j < N; j++)
            {
                if ((state & bit) > 0 && A[ConvertA(i, j)])
                {
                    res += Calc(i + 1, state - bit);
                    res %= Mod;
                }

                bit <<= 1;
            }

            Memo[ConvertMemo(i, state)] = res;
            return res;
        }

        private int ConvertA(int i, int j)
        {
            return i * N + j;
        }

        private int ConvertMemo(int i, int j)
        {
            return i * loop + j;
        }


        static void Main() => new Program().Solve();
    }
}

class Scanner
{
    public Scanner()
    {
        _stream = new StreamReader(Console.OpenStandardInput());
        _pos = 0;
        _line = new string[0];
        _separator = ' ';
    }
    private readonly char _separator;
    private readonly StreamReader _stream;
    private int _pos;
    private string[] _line;
    #region get a element
    public string Next()
    {
        if (_pos >= _line.Length)
        {
            _line = _stream.ReadLine().Split(_separator);
            _pos = 0;
        }
        return _line[_pos++];
    }
    public int NextInt()
    {
        return int.Parse(Next());
    }
    public long NextLong()
    {
        return long.Parse(Next());
    }
    public double NextDouble()
    {
        return double.Parse(Next());
    }
    #endregion
    #region convert array
    private int[] ToIntArray(string[] array)
    {
        var result = new int[array.Length];
        for (int i = 0; i < array.Length; i++)
        {
            result[i] = int.Parse(array[i]);
        }

        return result;
    }
    private long[] ToLongArray(string[] array)
    {
        var result = new long[array.Length];
        for (int i = 0; i < array.Length; i++)
        {
            result[i] = long.Parse(array[i]);
        }

        return result;
    }
    private double[] ToDoubleArray(string[] array)
    {
        var result = new double[array.Length];
        for (int i = 0; i < array.Length; i++)
        {
            result[i] = double.Parse(array[i]);
        }

        return result;
    }
    #endregion
    #region get array
    public string[] Array()
    {
        if (_pos >= _line.Length)
            _line = _stream.ReadLine().Split(_separator);
        _pos = _line.Length;
        return _line;
    }
    public int[] IntArray()
    {
        return ToIntArray(Array());
    }
    public long[] LongArray()
    {
        return ToLongArray(Array());
    }
    public double[] DoubleArray()
    {
        return ToDoubleArray(Array());
    }
    #endregion
}

Measured memory_bytes: 354912