#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define popcount __builtin_popcount using namespace std; typedef long long int ll; typedef pair P; const ll MOD=1e9+7; vector> matrixmul(int l, int m, int n, vector> a, vector> b){ vector> c(l, vector(n)); for(int i=0; i> matrixpow(int n, vector> a, ll k){ vector> ap=a, ans(n, vector(n)); for(int i=0; i>=1; } return ans; } int main() { int m; ll k; cin>>m>>k; vector> mat(m, vector(m)); for(int i=0; i