#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for(int i = 0; i < n; i++)
#define rep2(i, x, n) for(int i = x; i <= n; i++)
#define rep3(i, x, n) for(int i = x; i >= n; i--)
#define each(e, v) for(auto &e: v)
#define pb push_back
#define eb emplace_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(x) (int)x.size()
using ll = long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
const int MOD = 1000000007;
//const int MOD = 998244353;
const int inf = (1<<30)-1;
const ll INF = (1LL<<60)-1;
template<typename T> bool chmax(T &x, const T &y) {return (x < y)? (x = y, true) : false;};
template<typename T> bool chmin(T &x, const T &y) {return (x > y)? (x = y, true) : false;};

struct io_setup{
    io_setup(){
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        cout << fixed << setprecision(15);
    }
} io_setup;

using bs = bitset<2000>;
using mat = vector<bs>;

int V;

mat mul(mat a, mat b){
    mat ret(V);
    rep(i, V){
        rep(j, V){
            bs tmp = a[i]&b[j];
            if(!tmp.none()) ret[i].set(j);
        }
    }
    return ret;
}

int main(){
    ll D; cin >> V >> D;

    vector<string> S(V);
    rep(i, V) cin >> S[i];

    mat A(V);
    rep(i, V){
        rep(j, V){
            if(S[i][j] == '1') A[i].set(j);
        }
    }

    mat E(V);
    rep(i, V) E[i].set(i);

    chmin(D, 10000LL);
    while(D){
        if(D&1) E = mul(E, A);
        A = mul(A, A), D >>= 1;
    }

    rep(i, V){
        rep(j, V){
            if(!A[i][j]) {cout << "No\n"; return 0;}
        }
    }

    cout << "Yes\n";
}