#include <bits/stdc++.h>
#define fi first
#define se second
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define rrep(i,n) for(int i = 1; i <= (n); ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
#define srep(i,s,t) for (int i = s; i < t; ++i)
#define rng(a) a.begin(),a.end()
#define maxs(x,y) (x = max(x,y))
#define mins(x,y) (x = min(x,y))
#define limit(x,l,r) max(l,min(x,r))
#define lims(x,l,r) (x = max(l,min(x,r)))
#define isin(x,l,r) ((l) <= (x) && (x) < (r))
#define pb push_back
#define sz(x) (int)(x).size()
#define pcnt __builtin_popcountll
#define uni(x) x.erase(unique(rng(x)),x.end())
#define snuke srand((unsigned)clock()+(unsigned)time(NULL));
#define show(x) cout<<#x<<" = "<<x<<endl;
#define PQ(T) priority_queue<T,v(T),greater<T> >
#define bn(x) ((1<<x)-1)
#define dup(x,y) (((x)+(y)-1)/(y))
#define newline puts("")
#define v(T) vector<T>
#define vv(T) v(v(T))
using namespace std;
typedef long long int ll;
typedef unsigned uint;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<ll> vl;
typedef vector<P> vp;
inline int in() { int x; scanf("%d",&x); return x;}
template<typename T>inline istream& operator>>(istream&i,v(T)&v)
{rep(j,sz(v))i>>v[j];return i;}
template<typename T>string join(const v(T)&v)
{stringstream s;rep(i,sz(v))s<<' '<<v[i];return s.str().substr(1);}
template<typename T>inline ostream& operator<<(ostream&o,const v(T)&v)
{if(sz(v))o<<join(v);return o;}
template<typename T1,typename T2>inline istream& operator>>(istream&i,pair<T1,T2>&v)
{return i>>v.fi>>v.se;}
template<typename T1,typename T2>inline ostream& operator<<(ostream&o,const pair<T1,T2>&v)
{return o<<v.fi<<","<<v.se;}
template<typename T>inline ll suma(const v(T)& a) { ll res(0); for (auto&& x : a) res += x; return res;}
const double eps = 1e-10;
const ll LINF = 1001002003004005006ll;
const int INF = 1001001001;
#define dame { puts("-1"); return 0;}
#define yn {puts("YES");}else{puts("NO");}
const int MX = 200005;

// Mod int
const int mod = 1000000007;
struct mint {
  ll x;
  mint():x(0){}
  mint(ll x):x((x%mod+mod)%mod){}
  // mint(ll x):x(x){}
  mint& fix() { x = (x%mod+mod)%mod; return *this;}
  mint operator-() const { return mint(0) - *this;}
  mint& operator+=(const mint& a){ if((x+=a.x)>=mod) x-=mod; return *this;}
  mint& operator-=(const mint& a){ if((x+=mod-a.x)>=mod) x-=mod; return *this;}
  mint& operator*=(const mint& a){ (x*=a.x)%=mod; return *this;}
  mint operator+(const mint& a)const{ return mint(*this) += a;}
  mint operator-(const mint& a)const{ return mint(*this) -= a;}
  mint operator*(const mint& a)const{ return mint(*this) *= a;}
  bool operator<(const mint& a)const{ return x < a.x;}
  bool operator==(const mint& a)const{ return x == a.x;}
};
istream& operator>>(istream&i,mint&a){i>>a.x;return i;}
ostream& operator<<(ostream&o,const mint&a){o<<a.x;return o;}
typedef vector<mint> vm;
//

// Matrix
struct mat {
  typedef mint TT;
  int h, w;
  vv(TT) d;
  mat(){}
  mat(int h, int w, TT v=0):h(h),w(w),d(h,vector<TT>(w,v)){}
  v(TT)& operator[] (int i) { return d[i];}
  const v(TT)& operator[] (int i) const { return d[i];}
  void fil(TT v=0) { rep(i,h)rep(j,w) d[i][j] = v;}
  void unit() { rep(i,h)rep(j,w) d[i][j] = (i==j);}
  mat operator+(const mat& a) const { // same size
    mat res(h,w);
    rep(i,h)rep(j,w) res[i][j] = d[i][j]+a[i][j];
    return res;
  }
  mat operator-(const mat& a) const { // same size
    mat res(h,w);
    rep(i,h)rep(j,w) res[i][j] = d[i][j]-a[i][j];
    return res;
  }
  mat operator*(const mat& a) const { // w = a.h
    mat res(h,a.w);
    rep(i,h)rep(k,w)rep(j,a.w) res[i][j] += d[i][k]*a[k][j];
    return res;
  }
  mat power(ll a) { // h = w
    if (a == 0) {
      mat res(h,w); res.unit();
      return res;
    }
    mat res = power(a/2);
    res = res*res;
    if (a&1) res = res*(*this);
    return res;
  }
};
//



int main() {
  int n;
  scanf("%d",&n);
  ll k;
  scanf("%lld",&k);
  mat d(n,n);
  rep(i,n)rep(j,n) {
    int a;
    scanf("%d",&a);
    d[i][j] = a;
  }
  mat x(1,n);
  rep(i,n) x[0][i] = 1;
  x = x*(d.power(k));
  mint ans;
  rep(i,n) ans += x[0][i];
  cout<<ans<<endl;
  return 0;
}






















Measured memory_bytes: 384