#nullable enable

#region
var (_input, _iter) = (Array.Empty<string>(), 0);
string String()
{
    while (_iter >= _input.Length) (_input, _iter) = (Console.ReadLine()!.Split(' '), 0);
    return _input[_iter++];
}
T I<T>() where T : IParsable<T> => T.Parse(String(), null);
#endregion

var n = I<int>();
var m = I<int>();
var s = new int[m];
for (var i = 0; i < m; i++)
{
    var b = 0;
    var str = String();
    for (var j = 0; j < n; j++) b = (b << 1) + str[j] - '0';
    s[i] = b;
}
var all = (1 << n) - 1;
foreach (var b in s) all &= b;
var req = 1 << (n - int.PopCount(all));
var ans = all > 0 && m == req;
Console.WriteLine(ans ? "Yes" : "No");