// Slower C++ solution:
#include<bits/stdc++.h>

using namespace std;

long long n,k,mod=1e9+7;

struct matrix{

	long long x[100][100];	

}mat;

matrix matrixidentity(long long sz)

{

	matrix res;

	for(int i=0;i<=sz;i++)

	{

		for(int j=0;j<=sz;j++)

		{

			res.x[i][j] = 0;

			if(i==j) res.x[i][j] = 1;

		}

	}

	return res;

}

matrix multiplication(matrix a,matrix b,int sz,long long md)

{

	matrix res;

	for(int i=0;i<sz;i++)

	{

		for(int j=0;j<sz;j++)

		{

			res.x[i][j] = 0;

			for(int k=0;k<sz;k++)

			{

				res.x[i][j]+=(a.x[i][k]%md*b.x[k][j]%md)%md;

				res.x[i][j]%=md;

			}

		}

	}

	return res;

}

matrix matpow(matrix a,long long p,long long md)

{

	matrix res;

	res = matrixidentity(n);

	while(p)

	{

		if(p%2) res = multiplication(res,a,n,md);

		

		a = multiplication(a,a,n,md);

		p/=2;

	}

	

	return res;

}

int main()

{

	scanf("%lld %lld",&n,&k);

	for(int i=0;i<n;i++)

	{

		for(int j=0;j<n;j++)

		{

			scanf("%lld",&mat.x[i][j]);

		}

	}

	mat = matpow(mat,k,mod);

	//mat = multiplication(mat,mat,n,mod);

	long long ans = 0;

//	printf("\n");

	for(int i=0;i<n;i++)

	{

		for(int j=0;j<n;j++)

		{

			ans+=mat.x[i][j]%mod;

			ans%=mod;

			//printf("%lld ",mat.x[i][j]);

		}

		//printf("\n");

	}

	printf("%lld\n",ans);

	return 0;

}

// Faster C++ solution for the same problem (measured speedup: 2.3849867303700383x):


/**

    And in the end, the love you take is equal to the love you make.



        I LOVE YOU LAURA.

**/



#include <bits/stdc++.h>

#include <ext/pb_ds/assoc_container.hpp>

#include <ext/pb_ds/tree_policy.hpp>

#include <ext/rope>



#define _CRT_SECURE_NO_DEPRECATE

#define _CRT_DISABLE_PERFCRIT_LOCKS



#define findOrder find_by_order

#define orderKey order_of_key



#define isOn(mask, i) (mask & (1 << i))

#define turn(mask, i) (mask |= (1 << i))

#define switch(mask, i) (mask &= ~(1 << i))

#define change(mask, i) (mask ^= (1 << i))

#define lowbit(mask) (mask & (-mask))

#define turnAll(mask, n) (mask = (1 << n) - 1)

#define switchLastBit(mask) (mask & (mask - 1))

#define turnLastZero(mask) (mask | (mask + 1))

#define modulo(x, mod) ((x) & (mod - 1))

#define log2(x) (31 - __builtin_clz(x))



#define mkp make_pair

#define pb push_back

#define pf push_front

#define eb emplace_back

#define ef emplace_front

#define ins insert

#define rsz resize

#define f first

#define s second

#define lb lower_bound

#define ub upper_bound



#define sz(x) ((int)x.size())

#define all(x) begin(x), end(x)

#define rall(x) rbegin(x), rend(x)



#define debug(x) (cerr << x << " ")



using namespace std;

using namespace __gnu_pbds;

using namespace __gnu_cxx;



typedef double db;

typedef long long ll;

typedef long double ld;

typedef unsigned long long ull;



typedef pair<int, int> ii;

typedef pair<ll,ll> pll;

typedef pair<ld,ld> pdb;

typedef pair<int, ii> tri;

typedef complex<ld> cd;



typedef vector<int> vi;

typedef vector<ii> vii;

typedef vector<ld> vdb;

typedef vector<cd> vcd;

typedef vector<ll> vll;

typedef vector<string> vs;

typedef vector<vll> matrix;



typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_tree;



const ll mod = 1e9+7;

const int maxn = 2e5+2;

const int pi = 2 * acos(0.0);

const db eps = 1e-9;



matrix Identity (int n){

    matrix A(n, vll(n));



    for (int i = 0; i < n; i++) A[i][i] = 1LL;

    return A;

}



matrix mult (const matrix &A, const matrix &B){

    matrix C(sz(A), vll(sz(B[0])));

    for (int i = 0; i < sz(C); i++){

        for (int j = 0; j < sz(C[i]); j++){

            for (int k = 0; k < sz(A[i]); k++){

                ll tmp = (A[i][k] * B[k][j]) % mod;

                C[i][j] = (C[i][j] + tmp) % mod;

            }

        }

    }

    return C;

}



matrix qpow (const matrix &A, ll e){

    if (!e) return Identity(sz(A));

    if (e & 1) return mult(A, qpow(A, e - 1));

    return qpow(mult(A, A), e >> 1);

}



int main()

{

    ios_base::sync_with_stdio(0);

    cin.tie(0); cout.tie(0);



    ll n, k; cin >> n >> k;



    matrix graph(n, vll(n));



    for (int i = 0; i < n; i++){

        for (int j = 0; j < n; j++){

            cin >> graph[i][j];

        }

    }



    matrix ans = qpow(graph, k);



    ll a = 0;

    for (int i = 0; i < n; i++){

        for (int j = 0; j < n; j++){

            a = (a +  ans[i][j]) % mod;

            //cout << ans[i][j] << " ";

        }//cout << "\n";

    }



    cout << a << "\n";



    return 0;

}