// ---------- begin input macro ----------
// reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};
    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };
    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };
    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };
    ($iter:expr, bytes) => {
        read_value!($iter, String).bytes().collect::<Vec<u8>>()
    };
    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };
    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}
// ---------- end input macro ----------

fn run() {
    input! {
        n: usize,
        d: usize,
        s: [bytes; n],
    }
    let mut dp = vec![vec![d + 1; n]; 2];
    let mut q = std::collections::VecDeque::new();
    dp[0][0] = 0;
    q.push_back((0, 0));
    while let Some((p, v)) = q.pop_front() {
        let d = dp[p][v] + 1;
        for (u, _) in s[v].iter().enumerate().filter(|p| *p.1 == b'1') {
            if dp[p ^ 1][u] > d {
                dp[p ^ 1][u] = d;
                q.push_back((p ^ 1, u));
            }
        }
    }
    let mut ans = "Yes";
    for v in 0..n {
        let mut ok = false;
        ok |= dp[0][v] <= d && (d - dp[0][v]) % 2 == 0;
        ok |= dp[1][v] <= d && (d - dp[1][v]) % 2 == 0;
        if !ok {
            ans = "No";
        }
    }
    println!("{}", ans);
}

fn main() {
    run();
}