#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> P;
#define DUMP(x) cout << #x << " = " << (x) << endl;
#define FOR(i, m, n) for (ll i = m; i < n; i++)
#define IFOR(i, m, n) for (ll i = n - 1; i >= m; i--)
#define REP(i, n) FOR(i, 0, n)
#define IREP(i, n) IFOR(i, 0, n)
#define FOREACH(x, a) for (auto&(x) : (a))
#define ALL(v) (v).begin(), (v).end()
#define SZ(x) ll(x.size())

// matrix
template <class T>
struct Matrix {
  vector<vector<T>> val;
  Matrix(int n = 1, int m = 1, T v = 0) : val(n, vector<T>(m, v)) {}
  void init(int n, int m, T v = 0) { val.assign(n, vector<T>(m, v)); }
  void resize(int n, int m) {
    val.resize(n);
    for (int i = 0; i < n; ++i) val[i].resize(m);
  }
  Matrix<T>& operator=(const Matrix<T>& A) {
    val = A.val;
    return *this;
  }
  size_t size() const { return val.size(); }
  vector<T>& operator[](int i) { return val[i]; }
  const vector<T>& operator[](int i) const { return val[i]; }

  // debug
  friend ostream& operator<<(ostream& s, const Matrix<T>& M) {
    for (int i = 0; i < (int)M.size(); ++i)
      for (int j = 0; j < (int)M[i].size(); ++j)
        s << M[i][j]
          << " \n"[i != (int)M.size() - 1 && j == (int)M[i].size() - 1];
    return s;
  }
};

template <class T>
Matrix<T> operator*(const Matrix<T>& A, const Matrix<T>& B) {
  Matrix<T> R(A.size(), B[0].size());
  for (int i = 0; i < A.size(); ++i)
    for (int j = 0; j < B[0].size(); ++j)
      for (int k = 0; k < B.size(); ++k) R[i][j] += A[i][k] * B[k][j];
  return R;
}

template <class T>
Matrix<T> pow(const Matrix<T>& A, long long n) {
  Matrix<T> R(A.size(), A.size());
  auto B = A;
  for (int i = 0; i < A.size(); ++i) R[i][i] = 1;
  while (n > 0) {
    if (n & 1) R = R * B;
    B = B * B;
    n >>= 1;
  }
  return R;
}

template <class T>
vector<T> operator*(const Matrix<T>& A, const vector<T>& B) {
  vector<T> v(A.size());
  for (int i = 0; i < A.size(); ++i)
    for (int k = 0; k < B.size(); ++k) v[i] += A[i][k] * B[k];
  return v;
}

template <class T>
Matrix<T> operator+(const Matrix<T>& A, const Matrix<T>& B) {
  Matrix<T> R(A.size(), A[0].size());
  for (int i = 0; i < A.size(); ++i)
    for (int j = 0; j < A[0].size(); ++j) R[i][j] = A[i][j] + B[i][j];
  return R;
}

template <class T>
Matrix<T> operator-(const Matrix<T>& A, const Matrix<T>& B) {
  Matrix<T> R(A.size(), A[0].size());
  for (int i = 0; i < A.size(); ++i)
    for (int j = 0; j < A[0].size(); ++j) R[i][j] = A[i][j] - B[i][j];
  return R;
}

template <int MOD>
struct Fp {
  long long val;
  constexpr Fp(long long v = 0) noexcept : val(v % MOD) {
    if (val < 0) val += MOD;
  }
  constexpr int getmod() { return MOD; }
  constexpr Fp operator-() const noexcept { return val ? MOD - val : 0; }
  constexpr Fp operator+(const Fp& r) const noexcept { return Fp(*this) += r; }
  constexpr Fp operator-(const Fp& r) const noexcept { return Fp(*this) -= r; }
  constexpr Fp operator*(const Fp& r) const noexcept { return Fp(*this) *= r; }
  constexpr Fp operator/(const Fp& r) const noexcept { return Fp(*this) /= r; }
  constexpr Fp& operator+=(const Fp& r) noexcept {
    val += r.val;
    if (val >= MOD) val -= MOD;
    return *this;
  }
  constexpr Fp& operator-=(const Fp& r) noexcept {
    val -= r.val;
    if (val < 0) val += MOD;
    return *this;
  }
  constexpr Fp& operator*=(const Fp& r) noexcept {
    val = val * r.val % MOD;
    return *this;
  }
  constexpr Fp& operator/=(const Fp& r) noexcept {
    long long a = r.val, b = MOD, u = 1, v = 0;
    while (b) {
      long long t = a / b;
      a -= t * b;
      swap(a, b);
      u -= t * v;
      swap(u, v);
    }
    val = val * u % MOD;
    if (val < 0) val += MOD;
    return *this;
  }
  constexpr bool operator==(const Fp& r) const noexcept {
    return this->val == r.val;
  }
  constexpr bool operator!=(const Fp& r) const noexcept {
    return this->val != r.val;
  }
  friend constexpr ostream& operator<<(ostream& os, const Fp<MOD>& x) noexcept {
    return os << x.val;
  }
  friend constexpr Fp<MOD> modpow(const Fp<MOD>& a, long long n) noexcept {
    if (n == 0) return 1;
    auto t = modpow(a, n / 2);
    t = t * t;
    if (n & 1) t = t * a;
    return t;
  }
};

// 二項係数ライブラリ
template <class T>
struct BiCoef {
  vector<T> fact_, inv_, finv_;
  constexpr BiCoef() {}
  constexpr BiCoef(int n) noexcept : fact_(n, 1), inv_(n, 1), finv_(n, 1) {
    init(n);
  }
  constexpr void init(int n) noexcept {
    fact_.assign(n, 1), inv_.assign(n, 1), finv_.assign(n, 1);
    int MOD = fact_[0].getmod();
    for (int i = 2; i < n; i++) {
      fact_[i] = fact_[i - 1] * i;
      inv_[i] = -inv_[MOD % i] * (MOD / i);
      finv_[i] = finv_[i - 1] * inv_[i];
    }
  }
  constexpr T com(int n, int k) const noexcept {
    if (n < k || n < 0 || k < 0) return 0;
    return fact_[n] * finv_[k] * finv_[n - k];
  }
  constexpr T fact(int n) const noexcept {
    if (n < 0) return 0;
    return fact_[n];
  }
  constexpr T inv(int n) const noexcept {
    if (n < 0) return 0;
    return inv_[n];
  }
  constexpr T finv(int n) const noexcept {
    if (n < 0) return 0;
    return finv_[n];
  }

  // C(n,k), n <= 1e9, k <= 1e6
  constexpr T com2(int n, int k) const noexcept {
    if (n < k || n < 0 || k < 0) return 0;
    T res = 1;
    for (int i = n; i >= n - k + 1; i--) {
      T a = i, b = i - n + k;
      res *= a / b;
    }
    return res;
  }
};

const int MOD = 1000000007;
using mint = Fp<MOD>;
BiCoef<mint> bc;

// 二項係数Library使用時はmain内で初期化を忘れないこと
// int main(){
//  bc.init(2100000);
// }

int main() {
  int n;
  ll k;
  cin >> n >> k;
  Matrix<mint> A(n, n);
  REP(i, n) {
    REP(j, n) {
      int a;
      cin >> a;
      A[i][j] = (mint)a;
    }
  }

  mint ans = 0;
  auto B = pow(A, k);
  REP(i, n) REP(j, n) { ans += B[i][j]; }
  cout << ans << endl;
}

Measured memory_bytes: 384