// Original C++ solution (slower):
#include <bits/stdc++.h>

 

#define ll long long

#define X first

#define Y second

#define MP make_pair

 

using namespace std;



const int N = 123;

const ll mod = 1e9 + 7;             



int n;

struct mtx{

	ll a[N][N], len = n;

	mtx(){

		memset(a, 0, sizeof(a));

	}

	void operator *= (mtx b){

		int res[N][N];

		memset(res, 0, sizeof(res));

		for(int i = 1;i <= len;i++){

			for(int j = 1;j <= len;j++){

				for(int k = 1;k <= len;k++){

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

				}

			}

		}

		for(int i = 1;i <= len;i++){

			for(int j = 1;j <= len;j++){

				a[i][j] = res[i][j];

			}

		}

	}

};



mtx bin_pow(mtx x, ll y){

	mtx res;

	for(int i = 1;i <= n;i++){

			res.a[i][i] = 1;

	}

    

	while(y){

		if(y & 1LL)

			res *= x;

		

	/*	for(int i = 1;i <= n;i++){	

			for(int j = 1;j <= n;j++){

				cout << res.a[i][j] << " ";

	    	}

			cout << "\n";

		}

	*/	

		x *= x;

		y >>= 1LL;

	}

	return res;

}

   

int main () {

	ios::sync_with_stdio(0);

	cin.tie(0);

	cout.tie(0);



	ll k;

	cin >> n >> k;

	mtx z;

	for(int i = 1;i <= n;i++)

		for(int j = 1;j <= n;j++)

			cin >> z.a[i][j];

	//z *= z;

	z = bin_pow(z, k);

	ll res = 0;

	for(int i = 1;i <= n;i++){	

		for(int j = 1;j <= n;j++){

		//	cout << z.a[i][j] << " ";

			res += z.a[i][j], res %= mod;

	    }

		//cout << "\n";

	}

	cout << res;

}

// Optimized solution to the same problem (faster):
#include<bits/stdc++.h>

#include<cstdio>

#define ll long long

#define fi first

#define se second

using namespace std;

typedef pair<ll,ll> lp;

typedef vector<vector<ll>> vvl;

const int inf=0x3f3f3f3f;

const int mod=1e9+7;

void A() {

    int n;

    cin>>n;

    vector<int> a(n,0);

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

        cin>>a[i];

    vector<int> dp(n+1,inf);

    dp[0]=0;

    for(int i=1; i<n; i++) {

        dp[i]=min(dp[i],dp[i-1]+abs(a[i]-a[i-1]));

        if(i>=2)

            dp[i]=min(dp[i],dp[i-2]+abs(a[i]-a[i-2]));

    }

    cout<<dp[n-1]<<endl;



}

void B() {

    int n,k;

    cin>>n>>k;

    vector<int> dp(n+1,inf);

    vector<int> h(n,0);

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

        cin>>h[i];

    dp[0]=0;

    for(int i=1; i<n; i++) {

        for(int len=1; len<=min(k+1,i+1); len++) {

            int j=i-len+1;

            dp[i]=min(dp[i],dp[j]+abs(h[j]-h[i]));

        }

    }

    cout<<dp[n-1]<<endl;

}

void C() {

    int n;

    cin>>n;

    vector<vector<int>> a(n,vector<int>(3,0));

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

        cin>>a[i][0]>>a[i][1]>>a[i][2];

    vector<vector<int>> dp(n,vector<int>(3,0));

    dp[0][0]=a[0][0];

    dp[0][1]=a[0][1];

    dp[0][2]=a[0][2];

    for(int i=1; i<n; i++) {

        for(int j=0; j<3; j++) {

            for(int k=0; k<3; k++) {

                if(j==k)

                    continue;

                dp[i][j]=max(dp[i][j],dp[i-1][k]+a[i][j]);

                //cout<<dp[i][j]<<endl;

            }

        }

    }

    cout<<max(dp[n-1][0],max(dp[n-1][1],dp[n-1][2]))<<endl;

}

void D() {

    ll n,W;

    cin>>n>>W;

    vector<lp> p;

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

        ll a,b;

        cin>>a>>b;

        p.emplace_back(a,b);

    }

    sort(p.begin(),p.end());

    vector<ll> dp(W+1,0);

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

        for(int j=W; j>=p[i].first; j--) {

            if(j>0)

                dp[j]=max(dp[j],dp[j-1]);

            dp[j]=max(dp[j],dp[j-p[i].fi]+p[i].se);

        }

    }

    cout<<dp[W]<<endl;



}

void E() {

    //价值比较小，将dp[i]转化为获得当前i的价值的最小体积，然后根据W寻找符合要求的解；

    int n,W;

    cin>>n>>W;

    vector<ll> w(n,0);

    vector<ll> v(n,0);

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

        cin>>w[i]>>v[i];

    vector<ll> dp(100005,inf);

    dp[0]=0;

    int res=0;

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

        for(int j=1e5; j>=v[i]; j--) {

            dp[j]=min(dp[j],dp[j-v[i]]+w[i]);

            if(dp[j]<=W) {

                res=max(res,j);

            }

        }

    }

    cout<<res<<endl;



}

void F() {

    string s,t;

    cin>>s>>t;

    int n=s.size(),m=t.size();

    vector<vector<int>> dp(n+1,vector<int>(m+1,0));

    for(int i=1; i<=n; i++) {

        for(int j=1; j<=m; j++) {

            char a=s[i-1],b=t[j-1];

            if(a==b) {

                dp[i][j]=max(dp[i][j],dp[i-1][j-1]+1);

            }

            dp[i][j]=max(dp[i][j],max(dp[i-1][j],dp[i][j-1]));

        }

    }

    int i=n,j=m;

    stack<char> st;

    while(i!=0&&j!=0) {

        char a=s[i-1],b=t[j-1];

        if(a==b) {

            st.push(a);

            j--;

            i--;

        } else {

            if(dp[i][j]==dp[i-1][j])

                i--;

            else

                j--;

        }

    }

    string res;

    while(!st.empty()) {

        res+=st.top();

        st.pop();

    }

    cout<<res<<endl;

}

int Ghelper(vector<int>& dp,vector<vector<int>>& edge,int cur,int& ans) {

    if(dp[cur]!=-1)

        return dp[cur];

    int res=0;

    for(auto nb:edge[cur]) {

        res=max(res,Ghelper(dp,edge,nb,ans)+1);

    }

    ans=max(ans,res);

    dp[cur]=res;

    return res;

}

void G() {

    int n,m;

    cin>>n>>m;

    vector<vector<int>> edge(n+1,vector<int>());

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

        int x,y;

        cin>>x>>y;

        edge[x].push_back(y);

    }

    vector<int> dp(n+1,-1);

//    vector<bool> vis(n+1,0);

    int res=0;

    for(int i=1; i<=n; i++) {

//        if(vis[i]) continue;

//        vis[i]=true;

        Ghelper(dp,edge,i,res);

    }

    cout<<res<<endl;

}

void H() {

    int H,W;

    cin>>H>>W;

    vector<vector<char>> grid(H+1,vector<char>(W+1,'.'));

    vector<vector<ll>> dp(H+1,vector<ll>(W+1,0));

    for(int i=1; i<=H; i++) {

        for(int j=1; j<=W; j++) {

            cin>>grid[i][j];

        }

    }

    dp[1][1]=1;

    for(int i=1; i<=H; i++) {

        for(int j=1; j<=W; j++) {

            if(i==1&&j==1)

                continue;

            if(grid[i][j]=='#')

                dp[i][j]=0;

            else {

                dp[i][j]=(dp[i-1][j]+dp[i][j-1])%mod;

            }

        }

    }

    cout<<dp[H][W]<<endl;

}

void I() {

    int n;

    cin>>n;

    vector<vector<double>> dp(n+1,vector<double>(n+1,0.0));

    vector<double> p(n,0.0);

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

        cin>>p[i];

    dp[0][0]=1.0;

    for(int i=1; i<=n; i++) {

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

            if(j>0)

                dp[i][j]+=dp[i-1][j-1]*p[i-1];

            dp[i][j]+=dp[i-1][j]*(1-p[i-1]);

        }

    }

    double res=0.0;

    for(int i=(n+1)/2; i<=n; i++)

        res+=dp[n][i];

    printf("%.10f\n",res);

}

double JHelper(vector<vector<vector<double>>>& dp,int a,int b,int c,int n) {

    //cout<<a<<" "<<b<<" "<<c<<endl;

    if(a==0&&b==0&&c==0)

        return 0;

    if(dp[a][b][c]>0)

        return dp[a][b][c];

    double sum=a+b+c;

    double ans=1.0*n/sum;

    if(a)

        ans+=JHelper(dp,a-1,b,c,n)*(1.0*a/sum);

    if(b)

        ans+=JHelper(dp,a+1,b-1,c,n)*(1.0*b/sum);

    if(c)

        ans+=JHelper(dp,a,b+1,c-1,n)*(1.0*c/sum);

    dp[a][b][c]=ans;

    return ans;

}

void J() {

    int n;

    cin>>n;

    vector<int> a(n,0);

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

        cin>>a[i];

    int cnt[4]= {0,0,0,0};

    for(int i:a) {

        cnt[i]++;

    }

    //cout<<"OK"<<endl;

    vector<vector<vector<double>>> dp(n+1,vector<vector<double>>(n+1,vector<double>(n+1,-1.0)));

    printf("%.13f\n",JHelper(dp,cnt[1],cnt[2],cnt[3],n));

}

//int KHelper(vector<int>& a,vector<int>& dp,int cur,int n)

//{

//    cout<<cur<<" "<<endl;

//    if(dp[cur]!=-1) return dp[cur];

//    dp[cur]=0;

//    for(int i=0;i<n&&cur>=a[i];i++){

//        dp[cur]|=1-KHelper(a,dp,cur-a[i],n);

//        if(dp[cur]==1) break;

//    }

//    return dp[cur];

//}

void K() {

    int n,k;

    cin>>n>>k;

    vector<int> a(n+1,0);

    vector<int> dp(k+3,-1);

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

        cin>>a[i];

    }

//    if(KHelper(a,dp,k,n)==1) cout<<"First"<<endl;

//    else cout<<"Second"<<endl;

    dp[0]=0;

    for(int i=1; i<=k; i++) {

        dp[i]=0;

        for(int j=0; j<n&&a[j]<=i; j++) {

            dp[i]|=1-dp[i-a[j]];

            if(dp[i]==1)

                break;

        }

    }

    if(dp[k]==1)

        cout<<"First"<<endl;

    else

        cout<<"Second"<<endl;

}

void L() {

    int n;

    cin>>n;

    vector<ll> a(n+1,0);

    for(int i=1; i<=n; i++)

        cin>>a[i];

    vector<vector<ll>> dp(n+2,vector<ll>(n+2,0));

    for(int len=1; len<=n; len++) {

        for(int i=1; i+len<=n+1; i++) {

            int j=i+len-1;

            if((n-len)%2==0) {

                dp[i][j]=max(dp[i+1][j]+a[i],dp[i][j-1]+a[j]);

            } else {

                dp[i][j]=min(dp[i+1][j]-a[i],dp[i][j-1]-a[j]);

            }

        }

    }

    cout<<dp[1][n]<<endl;

}

void M() {

    int n,K;

    cin>>n>>K;

    vector<int> a(n+1,0);

    for(int i=1; i<=n; i++)

        cin>>a[i];

    vector<vector<int>> dp(n+1,vector<int>(K+1,0));

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

        dp[i][0]=1;

//    for(int i=0;i<=K;i++) dp[0][i]=1;

    for(int i=1; i<=n; i++) {

        dp[i][0]=1;

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

            dp[i][j+1]=(dp[i][j+1]+dp[i][j]+dp[i-1][j+1])%mod;

            if(j>=a[i]) {

                dp[i][j+1]=(dp[i][j+1]-dp[i-1][j-a[i]]+mod)%mod;

            }



        }

    }

    cout<<dp[n][K]<<endl;

}

void N() {

    int n;

    cin>>n;

    vector<ll> a(n+1,0);

    vector<ll> sum(n+1,0);

    vector<vector<ll>> dp(n+1,vector<ll>(n+1,-1));

    for(int i=1; i<=n; i++) {

        cin>>a[i];

        sum[i]=sum[i-1]+a[i];

    }

    for(int i=1; i<=n-1; i++) {

        dp[i][i]=0;

        dp[i][i+1]=a[i]+a[i+1];

    }

    dp[n][n]=0;

    for(int len=3; len<=n; len++) {

        for(int i=1; i+len-1<=n; i++) {

            int j=i+len-1;

            for(int k=i; k<j; k++) {

                if(dp[i][j]==-1)

                    dp[i][j]=dp[i][k]+dp[k+1][j]+sum[j]-sum[i-1];

                else

                    dp[i][j]=min(dp[i][j],dp[i][k]+dp[k+1][j]+sum[j]-sum[i-1]);

            }

        }

    }

    cout<<dp[1][n]<<endl;

}

void O() {

    int n;

    cin>>n;

    vector<vector<int>> cnt(n+1,vector<int>(n+1,0));

    for(int i=1; i<=n; i++) {

        for(int j=1; j<=n; j++) {

            cin>>cnt[i][j];

        }

    }

    vector<int> dp((1<<n),0);

    dp[0]=1;

    for(int mask=1; mask<(1<<n); mask++) {

        bitset<32> bt(mask);

        int i=bt.count();

        //cout<<i<<endl;

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

            if(cnt[i][j+1]==1&&((mask&(1<<j))!=0)) {

                dp[mask]=(dp[mask]+dp[mask-(1<<j)])%mod;

            }

        }

    }

    cout<<dp[(1<<n)-1]<<endl;

}

ll PHelper(vector<vector<ll>>& dp,vector<vector<int>>& child,int cur,int flag) {

    if(dp[cur][flag]!=-1)

        return dp[cur][flag];

    ll ans=1;

    for(auto c:child[cur]) {

        if(flag==1)

            ans=(ans*PHelper(dp,child,c,0))%mod;

        else

            ans=(ans*(PHelper(dp,child,c,0)+PHelper(dp,child,c,1)))%mod;

    }

    dp[cur][flag]=ans;

    return ans;

}

void P() {

    int n;

    cin>>n;

    vector<vector<int>> child(n+1,vector<int>());

    vector<vector<ll>> dp(n+1,vector<ll>(2,-1));

    vector<vector<int>> edge(n+1,vector<int>());

    for(int i=0; i<n-1; i++) {

        int x,y;

        cin>>x>>y;

        edge[x].push_back(y);

        edge[y].push_back(x);

    }

    vector<bool> vis(n+1,0);

    vis[1]=true;

    queue<int> q;

    q.push(1);

    while(!q.empty()) {

        auto u=q.front();

        q.pop();

        for(auto e:edge[u]) {

            if(vis[e])

                continue;

            vis[e]=true;

            child[u].push_back(e);

            q.push(e);

        }

    }

    ll res=(PHelper(dp,child,1,0)+PHelper(dp,child,1,1))%mod;

    cout<<res<<endl;

}

void Q() {

    set<lp> cnt;

    int n;

    cin>>n;

    vector<ll> h(n+1,0);

    vector<ll> a(n+1,0);

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

        cin>>h[i];

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

        cin>>a[i];

    ll res=0;

    cnt.insert({0,0});

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

        //

        ll cur=0;

        auto it=prev(cnt.lower_bound({h[i],0}));

        cur=it->second+a[i];

        while(true) {

            auto next=cnt.lower_bound({h[i],0});

            if(next!=cnt.end()&&next->second<=cur) {

                cnt.erase(next);

            } else

                break;

        }

        res=max(res,cur);

        cnt.insert({h[i],cur});

    }

    cout<<res<<endl;

}

void R() {

    ll N,K;

    cin>>N>>K;

    vector<vector<ll>> a(N+1,vector<ll>(N+1,0));

    for(int i=1; i<=N; i++) {

        for(int j=1; j<=N; j++) {

            cin>>a[i][j];

        }

    }

    auto amul=[](vvl aa,vvl bb,int n) {

        vector<vector<ll>> t(n+1,vector<ll>(n+1,0));

        for(int i=1; i<=n; i++) {

            for(int j=1; j<=n; j++) {

                for(int k=1; k<=n; k++) {

                    t[i][j]=(t[i][j]+aa[i][k]*bb[k][j])%mod;

                }

            }

        }

        return t;

    };

    auto power=[&amul](ll k,vvl cur,int n) {

        vvl res(n+1,vector<ll> (n+1,0));

        for(int i=1; i<=n; i++)

            res[i][i]=1;

        while(k>0) {

            if(k&1)

                res=amul(res,cur,n);

            k=k>>1;

            cur=amul(cur,cur,n);

        }

        return res;

    };

    ll ans=0;

    vvl f=power(K,a,N);

    for(int i=1; i<=N; i++) {

        for(int j=1; j<=N; j++) {

            ans+=f[i][j];

            ans%=mod;

        }

    }

    cout<<ans<<endl;

}

int main() {

    ios::sync_with_stdio(false);

    cin.tie(0);

    cout.tie(0);

    R();

}


// Fastest known solution for this problem: