package yukicoder_3785;

import java.util.BitSet;
import java.util.Scanner;

public class Main2 {
	public static void main(String[] args) {
		new Main2();
	}

	public Main2() {
		try (Scanner sc = new Scanner(System.in)) {
			int V, D;
			V = sc.nextInt();
			D = sc.nextInt();
			BitSet[] graph = new BitSet[V];
			for (int i = 0;i < V;++ i) {
				graph[i] = new BitSet(V);
				String E = sc.next();
				for (int j = 0;j < V;++ j) graph[i].set(j, E.charAt(j) == '1');
			}
			boolean ans = graph[0].cardinality() > 0;

			for (int i = 0;i < V;++ i) {
				BitSet now = (BitSet)graph[i].clone(), one = new BitSet(V), two = new BitSet(V), three = new BitSet(V);
				one.set(i);
				for (int j = 1;j < D;++ j) {
					BitSet check = (BitSet)now.clone();
					check.xor(two);
					if (check.isEmpty()) break;
					two = (BitSet)one.clone();
					for (int k = check.nextSetBit(0);k >= 0;k = check.nextSetBit(k + 1)) one.or(graph[k]);
					three = now;
					now = one;
					one = three;
				}
				ans &= now.cardinality() == V;
			}
			System.out.println(ans ? "Yes" : ":(");
		}
	}
}