using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Text;
using System.Globalization;
using System.Diagnostics;



class Myon
{
    public Myon() { }
    public static int Main()
    {
        new Myon().calc();
        return 0;
    }

    Scanner cin;
    

    long mod = 1000000007;


    void calc()
    {
        cin = new Scanner();
        int N = cin.nextInt();
        long K = cin.nextLong();
        long[,] A = new long[N, N];
        for (int i = 0; i < N; i++)
        {
            for (int j = 0; j < N; j++)
            {
                A[i, j] = cin.nextInt();
            }
        }

        var B = matpow(A, K);
        long ans = 0;
        for (int i = 0; i < N; i++)
        {
            for (int j = 0; j < N; j++)
            {
                ans += B[i, j];
            }
        }
        ans %= mod;
        Console.WriteLine(ans);

    }
    
    long[,] matpow(long[,] m, long a)
    {
        if (a == 0)
        {
            int len = m.GetLength(0);
            long[,] res = new long[len, len];
            int i;
            for (i = 0; i < len; i++) res[i, i] = 1;
            return res;
        }
        else if (a % 2 == 0)
        {
            long[,] res = matpow(m, a / 2);
            return matmul(res, res);
        }
        else
        {
            return matmul(m, matpow(m, a - 1));
        }
    }

    long[,] matmul(long[,] ma, long[,] mb)
    {
        int i, j, k;
        int len1 = ma.GetLength(0);
        int len2 = mb.GetLength(1);
        int len3 = ma.GetLength(1);
        long[,] res = new long[len1, len2];
        for (i = 0; i < len1; i++)
        {
            for (j = 0; j < len2; j++)
            {
                for (k = 0; k < len3; k++)
                {
                    res[i, j] += ma[i, k] * mb[k, j] % mod;
                }
                res[i, j] %= mod;
            }
        }
        return res;
    }






}


class Scanner
{
    string[] s;
    int i;

    char[] cs = new char[] { ' ' };

    public Scanner()
    {
        s = new string[0];
        i = 0;
    }

    public string next()
    {
        if (i < s.Length) return s[i++];
        string st = Console.ReadLine();
        while (st == "") st = Console.ReadLine();
        s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
        if (s.Length == 0) return next();
        i = 0;
        return s[i++];
    }

    public int nextInt()
    {
        return int.Parse(next());
    }
    public int[] ArrayInt(int N, int add = 0)
    {
        int[] Array = new int[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextInt() + add;
        }
        return Array;
    }

    public long nextLong()
    {
        return long.Parse(next());
    }

    public long[] ArrayLong(int N, long add = 0)
    {
        long[] Array = new long[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextLong() + add;
        }
        return Array;
    }

    public double nextDouble()
    {
        return double.Parse(next());
    }


    public double[] ArrayDouble(int N, double add = 0)
    {
        double[] Array = new double[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextDouble() + add;
        }
        return Array;
    }
}

class XRand
{
    uint x, y, z, w;


    public XRand()
    {
        init();
    }

    public XRand(uint s)
    {
        init();
        init_xor128(s);
    }

    void init()
    {
        x = 314159265; y = 358979323; z = 846264338; w = 327950288;

    }

    public void init_xor128(uint s)
    {
        z ^= s;
        z ^= z >> 21; z ^= z << 35; z ^= z >> 4;
        z *= 736338717;
    }

    uint next()
    {
        uint t = x ^ x << 11; x = y; y = z; z = w; return w = w ^ w >> 19 ^ t ^ t >> 8;
    }

    public long nextLong(long m)
    {
        return (long)((((ulong)next() << 32) + next()) % (ulong)m);
    }

    public int nextInt(int m)
    {
        return (int)(next() % m);
    }

    public int nextIntP(int a)
    {
        return (int)Math.Pow(a, nextDouble());
    }

    public int nextInt(int min, int max)
    {
        return min + nextInt(max - min + 1);
    }


    public double nextDouble()
    {
        return (double)next() / uint.MaxValue;
    }

    public double nextDoubleP(double a)
    {
        return Math.Pow(a, nextDouble());
    }
}



Measured memory_bytes: 14816