//
//
//  Codeforces: ganariya
//  AtCoder: ganariya2525
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//include
//------------------------------------------
#include <vector>
#include <list>
#include <map>
#include <unordered_map>
#include <climits>
#include <set>
#include <unordered_set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <queue>
#include <random>
#include <complex>
#include <regex>
#include <locale>
#include <random>
#include <type_traits>

using namespace std;

#define SHOW_VECTOR(v) {std::cerr << #v << "\t:";for(const auto& xxx : v){std::cerr << xxx << " ";}std::cerr << "\n";}
#define SHOW_MAP(v){std::cerr << #v << endl; for(const auto& xxx: v){std::cerr << xxx.first << " " << xxx.second << "\n";}}

using LL = long long;

//~~~~~~~~~~~~~~~~~~~~~_(＾～＾ ｣ ∠)_~~~~~~~~~~~~~~~~~~~~~

constexpr long long mod = 1e9 + 7;

typedef vector<vector<long long>> matrix;

matrix mul_mod(matrix A, matrix B) {
    int H = A.size();
    int W = B[0].size();
    int K = A[0].size();

    matrix C(H, vector<LL>(W, 0));
    for (int i = 0; i < H; i++) {
        for (int j = 0; j < W; j++) {
            for (int k = 0; k < K; k++) {
                C[i][j] += A[i][k] * B[k][j];
                C[i][j] %= mod;
            }
        }
    }
    return C;
}

matrix pow_mod_matrix(matrix A, LL p) {
    matrix ret = matrix(A.size(), vector<long long>(A.size(), 0));
    for (int i = 0; i < A.size(); i++) ret[i][i] = 1;

    while (p > 0) {
        if (p & 1) ret = mul_mod(ret, A);
        A = mul_mod(A, A);
        p >>= 1;
    }
    return ret;
}

int main() {

    LL N, K;
    cin >> N >> K;

    matrix A(N, vector<LL>(N, 0));
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < N; j++) {
            cin >> A[i][j];
        }
    }

    auto ret = pow_mod_matrix(A, K);

    LL ans = 0;
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < N; j++) {
            ans += ret[i][j];
            ans %= mod;
        }
    }

    cout << ans;

    return 0;
}










































Measured memory_bytes: 384