#include<bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < n; ++i)
#define rrep(i,n) for (int i = n-1; i >= 0; i--)
#define rep2(i,s,n) for (int i = s; i < n; ++i)
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define tmax(a,b,c) max(a,max(b,c))
#define tmin(a,b,c) min(a,min(b,c))
#define pb push_back
#define eb emplace_back
#define vi vector<int>
#define vvi vector<vector<int>>
#define vl vector<ll>
#define vvl vector<vector<ll>>
#define vs vector<string>
#define vc vector<char>
#define vb vector<bool>
#define vp vector<P>
using namespace std;
using ll = long long;
using P = pair<int,int>;
using LP = pair<ll,ll>;
template<class T> istream& operator>>(istream& is,vector<T>& v) { for(T& t:v){is>>t;} return is; }
template<class T> ostream& operator<<(ostream& os,const vector<T>& v) { for(T t:v){os<<t<<" ";} os<<"\n"; return os; }
void Yes(bool b) { cout << (b ? "Yes" : "No") << endl; }
void YES(bool b) { cout << (b ? "YES" : "NO") << endl; }
template<class T> inline bool chmin(T& a,T b) {if(a > b){a = b; return true;} return false;}
template<class T> inline bool chmax(T& a,T b) {if(a < b){a = b; return true;} return false;}
const int inf = 1001001001;
const ll linf = 1001001001001001001;

const int mod = 1000000007;
//const int mod = 998244353;
struct mint {
    ll x;
    mint(ll x=0):x((x%mod+mod)%mod){}
    mint operator-() const { return mint(-x);}
    mint& operator+=(const mint& a) { if ((x += a.x) >= mod) x -= mod; return *this;}
    mint& operator++() { x += 1; return *this;}
    mint& operator-=(const mint& a) { if ((x += mod-a.x) >= mod) x -= mod; return *this; }
    mint& operator--() { x -= 1; return *this;}
    mint& operator*=(const mint& a) { (x *= a.x) %= mod; return *this; }
    mint operator+(const mint& a) const { mint res(*this); return res+=a; }
    mint operator-(const mint& a) const { mint res(*this); return res-=a; }
    mint operator*(const mint& a) const { mint res(*this); return res*=a; }
    bool operator==(const int& n) const { mint a(n); return this->x == a.x; }
    bool operator==(const ll& n) const { mint a(n); return this->x == a.x; }
    bool operator!=(const int& n) const { mint a(n); return this->x != a.x; }
    bool operator!=(const ll& n) const { mint a(n); return this->x != a.x; }
    mint pow(ll t) const {
        mint res = 1,a(*this);
        while(t > 0) {
            if(t&1) res *= a;
            t >>= 1;
            a *= a;
        }
        return res;
    }
    // for prime mod
    mint inv() const { return pow(mod-2); }
    mint& operator/=(const mint& a) { return (*this) *= a.inv(); }
    mint operator/(const mint& a) const { mint res(*this); return res/=a; }
};
istream& operator>>(istream& is,const mint& m) { return is >> m.x; }
ostream& operator<<(ostream& os,const mint& m) { return os << m.x; }

template<typename T>
struct matrix {
    int h,w;
    vector<vector<T>> v;
    matrix(int h,int w,T t):h(h),w(w),v(vector<vector<T>>(h,vector<T>(w,t))) {}
    matrix(vector<vector<T>> v):v(v),h(v.size()),w(v[0].size()) {}
    matrix& operator+=(const matrix& a) { rep(i,h) rep(j,w) v[i][j] += a.v[i][j]; return *this; }
    matrix& operator*=(const int& k) { rep(i,h) rep(j,w) v[i][j] *= k; return *this; }
    matrix& operator-=(const matrix& a) { *this += a*(-1); return *this; }
    matrix operator+(const matrix& a) const { return res(*this) += a; }
    matrix operator*(const int& k) const { return res(*this) *= k; }
    matrix operator-(const matrix& a) const { return res(*this) -= a; }
    matrix operator*(const matrix& a) const {
        matrix res(h,a.w,0);
        rep(i,h) rep(j,a.h) rep(k,a.w) res.v[i][k] += v[i][j]*a.v[j][k];
        return res;
    }
    matrix& operator*=(const matrix& a) { return *this = *this*a; }
    matrix pow(ll t) const {
        matrix res(h,w,0),a(*this);
        rep(i,h) res.v[i][i] = 1;
        while(t > 0) {
            if(t&1) res *= a;
            t >>= 1;
            a *= a;
        }
        return res;
    }
};

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    int n;
    ll k;
    cin >> n >> k;
    vvi a(n,vi(n));
    cin >> a;
    vector<vector<mint>> na(n,vector<mint>(n,0));
    rep(i,n) rep(j,n) na[i][j] = mint(a[i][j]);
    matrix<mint> m(na);
    m = m.pow(k);
    mint ans = 0;
    rep(i,n) rep(j,n) ans += m.v[i][j];
    cout << ans << endl;
}


Measured memory_bytes: 384