#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using bs = bitset<2000>;
int main() {
    ll v, d;
    cin >> v >> d;
    d = min(d, v * 2);
    vector<bs> E(v);
    for (auto& i : E) {
        string str;
        cin >> str;
        reverse(str.begin(), str.end());
        i = bs(str);
    }
    
    for (int i = 0; i < v; ++i) {
        bs reachable = E[i], back1, back2;
        back1[i] = true;
        // already consumed 1 turn for reachable
        for (int j = 0; j < d - 1; ++j) {
            bs diff = reachable ^ back2;  // back1 ^ back2
            if (diff.none()) break;
            back2 = back1;
            for (int k = diff._Find_first(); k < v; k = diff._Find_next(k))
                back1 |= E[k];
            swap(reachable, back1);
        }
        if ((ll)reachable.count() < v) return cout << "No" << endl, 0;
    }
    cout << "Yes" << endl;
}