use std::collections::HashSet;

const DX: [isize; 2] = [1, 0];
const DY: [isize; 2] = [0, 1];

fn main() {
    let mut hw = String::new();
    std::io::stdin().read_line(&mut hw).ok();
    let hw: Vec<usize> = hw.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let h = hw[0];
    let w = hw[1];
    let grid = (0..h).map(|_| {
            let mut temp = String::new();
            std::io::stdin().read_line(&mut temp).ok();
            let temp: Vec<usize> = temp.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
            temp
        })
        .collect::<Vec<Vec<usize>>>();

    let mut mapping = vec![vec![vec![0usize; w]; h]; 2];
    mapping[0][0][0] = grid[0][0];
    let mut frontier = HashSet::new();
    frontier.insert((0, 0));
    for _ in 0..(h+w-2) {
        let mut next_frontier = HashSet::new();
        for &(cx, cy) in frontier.iter() {
            for dir in 0..2 {
                let nx = cx as isize + DX[dir];
                let ny = cy as isize + DY[dir];
                if nx < h as isize && ny < w as isize {
                    let nx = nx as usize;
                    let ny = ny as usize;
                    for time in 0..2 {
                        let current_attack = mapping[time][cx][cy];
                        if current_attack == 0 { continue; }
                        let next_attack = current_attack + grid[nx][ny];
                        if current_attack > grid[nx][ny] {
                            mapping[time][nx][ny] = mapping[time][nx][ny].max(next_attack)
                        } else if time == 0 && !(nx == h-1 && ny == w-1) {
                            mapping[time+1][nx][ny] = mapping[time+1][nx][ny].max(current_attack);
                        } else {
                            continue;
                        }
                        next_frontier.insert((nx, ny));
                    }
                }
            }
        }
        frontier = next_frontier;
    }
    if mapping[0][h-1][w-1] + mapping[1][h-1][w-1] > 0 {
        println!("Yes");
    } else {
        println!("No");
    }
}