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

using E = System.Linq.Enumerable;

internal partial class Solver {
    public void Run() {
        var n = ni();
        var k = nl();
        int mod = 1000000000 + 7;
        var mat = new ModMatrix(n, n, mod);
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                mat[i, j] = ni();
            }
        }
        var b = new ModMatrix(n, 1, mod);
        for (int i = 0; i < n; i++) {
            b[i, 0] = 1;
        }
        var x = (ModMatrix.Pow(mat, k) * b);
        long ans = 0;
        for (int i = 0; i < n; i++) {
            ans += x[i, 0];
            ans %= mod;
        }
        cout.WriteLine(ans);
    }
}


public class ModMatrix {
    public int Row { get; private set; }
    public int Col { get; private set; }
    public int Mod { get; private set; }
    private long[] Data;
    public ModMatrix(int row, int col, int mod) {
        Row = row;
        Col = col;
        Data = new long[Row * Col];
        Mod = mod;
    }

    public ModMatrix(long[,] array, int mod)
        : this(array.GetLength(0), array.GetLength(1), mod) {
        int index = 0;
        for (int i = 0; i < Row; i++) {
            for (int j = 0; j < Col; j++) {
                Data[index++] = array[i, j] % mod;
            }
        }
    }

    public long this[int row, int col] {
        set {
            Data[row * Col + col] = value;
        }
        get {
            return Data[row * Col + col];
        }
    }

    public static ModMatrix UnitMatrix(int n, int mod) {
        var matrix = new ModMatrix(n, n, mod);
        for (int i = 0; i < n; i++) {
            matrix[i, i] = 1;
        }
        return matrix;
    }

    public static ModMatrix operator +(ModMatrix A, ModMatrix B) {
        if (A.Mod != B.Mod) {
            throw new InvalidOperationException("A.Mod must be equal to B.Mod");
        }

        var C = new ModMatrix(A.Row, A.Col, A.Mod);
        for (int i = 0; i < C.Data.Length; i++) {
            C.Data[i] = (A.Data[i] + B.Data[i] + A.Mod) % A.Mod;
        }
        return C;
    }

    public static ModMatrix operator -(ModMatrix A, ModMatrix B) {
        if (A.Mod != B.Mod) {
            throw new InvalidOperationException("A.Mod must be equal to B.Mod");
        }

        var C = new ModMatrix(A.Row, A.Col, A.Mod);
        for (int i = 0; i < C.Data.Length; i++) {
            C.Data[i] = (A.Data[i] - B.Data[i] + A.Mod) % A.Mod;
        }
        return C;
    }

    public static ModMatrix operator *(ModMatrix A, ModMatrix B) {
        if (A.Mod != B.Mod) {
            throw new InvalidOperationException("A.Mod must be equal to B.Mod");
        }

        var C = new ModMatrix(A.Row, B.Col, A.Mod);
        for (int i = 0; i < A.Row; i++) {
            for (int j = 0; j < B.Col; j++) {
                long val = C[i, j];
                for (int k = 0; k < A.Col; k++) {
                    val = (val + A[i, k] * B[k, j]) % A.Mod;
                }

                if (val < 0) {
                    val += A.Mod;
                }

                C[i, j] = val;
            }
        }
        return C;
    }

    public static ModMatrix Pow(ModMatrix A, long n) {
        if (n == 0) {
            return UnitMatrix(A.Row, A.Mod);
        }

        if (n == 1) {
            return A;
        }

        ModMatrix result = A.Clone(), t = A.Clone(); n--;
        while (n > 0) {
            if ((n & 1) != 0) {
                result = result * t;
            }
            t = t * t;
            n >>= 1;
        }

        return result;
    }

    public ModMatrix Clone() {
        return new ModMatrix(Row, Col, Mod) { Data = Data.Clone() as long[] };
    }
}

// PREWRITEN CODE BEGINS FROM HERE
internal partial class Solver : Scanner {
    public static void Main(string[] args) {
#if LOCAL
        byte[] inputBuffer = new byte[1000000];
        var inputStream = Console.OpenStandardInput(inputBuffer.Length);
        using (var reader = new StreamReader(inputStream, Console.InputEncoding, false, inputBuffer.Length)) {
            Console.SetIn(reader);
            new Solver(Console.In, Console.Out).Run();
        }
#else
        Console.SetOut(new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false });
        new Solver(Console.In, Console.Out).Run();
        Console.Out.Flush();
#endif
    }

#pragma warning disable IDE0052
    private readonly TextReader cin;
    private readonly TextWriter cout;
#pragma warning restore IDE0052

    public Solver(TextReader reader, TextWriter writer)
        : base(reader) {
        cin = reader;
        cout = writer;
    }
    public Solver(string input, TextWriter writer)
        : this(new StringReader(input), writer) {
    }

#pragma warning disable IDE1006
#pragma warning disable IDE0051
    private int ni() { return NextInt(); }
    private int[] ni(int n) { return NextIntArray(n); }
    private long nl() { return NextLong(); }
    private long[] nl(int n) { return NextLongArray(n); }
    private double nd() { return NextDouble(); }
    private double[] nd(int n) { return NextDoubleArray(n); }
    private string ns() { return Next(); }
    private string[] ns(int n) { return NextArray(n); }
#pragma warning restore IDE1006
#pragma warning restore IDE0051
}

internal static class LinqPadExtension {
    [Conditional("DEBUG")]
    public static void Dump<T>(this T obj) {
#if DEBUG
        LINQPad.Extensions.Dump(obj);
#endif
    }
}

public class Scanner {
    private readonly TextReader Reader;
    private readonly CultureInfo ci = CultureInfo.InvariantCulture;

    private readonly char[] buffer = new char[2 * 1024];
    private int cursor = 0, length = 0;
    private string Token;
    private readonly StringBuilder sb = new StringBuilder(1024);

    public Scanner()
        : this(Console.In) {
    }

    public Scanner(TextReader reader) {
        Reader = reader;
    }

    public int NextInt() { return (int)NextLong(); }
    public long NextLong() {
        var s = Next();
        long r = 0;
        int i = 0;
        bool negative = false;
        if (s[i] == '-') {
            negative = true;
            i++;
        }
        for (; i < s.Length; i++) {
            r = r * 10 + (s[i] - '0');
#if DEBUG
            if (!char.IsDigit(s[i])) throw new FormatException();
#endif
        }
        return negative ? -r : r;
    }
    public double NextDouble() { return double.Parse(Next(), ci); }
    public string[] NextArray(int size) {
        string[] array = new string[size];
        for (int i = 0; i < size; i++) {
            array[i] = Next();
        }

        return array;
    }
    public int[] NextIntArray(int size) {
        int[] array = new int[size];
        for (int i = 0; i < size; i++) {
            array[i] = NextInt();
        }

        return array;
    }

    public long[] NextLongArray(int size) {
        long[] array = new long[size];
        for (int i = 0; i < size; i++) {
            array[i] = NextLong();
        }

        return array;
    }

    public double[] NextDoubleArray(int size) {
        double[] array = new double[size];
        for (int i = 0; i < size; i++) {
            array[i] = NextDouble();
        }

        return array;
    }

    public string Next() {
        if (Token == null) {
            if (!StockToken()) {
                throw new InvalidOperationException();
            }
        }
        var token = Token;
        Token = null;
        return token;
    }

    public bool HasNext() {
        if (Token != null) {
            return true;
        }

        return StockToken();
    }

    private bool StockToken() {
        while (true) {
            sb.Clear();
            while (true) {
                if (cursor >= length) {
                    cursor = 0;
                    if ((length = Reader.Read(buffer, 0, buffer.Length)) <= 0) {
                        break;
                    }
                }
                var c = buffer[cursor++];
                if (33 <= c && c <= 126) {
                    sb.Append(c);
                } else {
                    if (sb.Length > 0) break;
                }
            }

            if (sb.Length > 0) {
                Token = sb.ToString();
                return true;
            }

            return false;
        }
    }
}

Measured memory_bytes: 15456