import itertools as iter
import collections as coll
import heapq as hq
import bisect as bis
from decimal import Decimal as dec
from functools import cmp_to_key
import math
import sys
#import pypyjit
#pypyjit.set_param('max_unroll_recursion=-1')
sys.setrecursionlimit(10 ** 6)
inp = sys.stdin.readline
input = lambda : inp().rstrip()
getN = lambda : int(inp())
getNs = lambda : map(int, inp().split())
getList = lambda :list(map(int, inp().split()))
getStrs = lambda n : [input() for _ in [0] * n]
def yexit(): print("Yes"); exit(0)
def nexit(): print("No"); exit(0)
pi = 3.141592653589793
mod = 1000000007
MOD = 998244353
INF = 4611686018427387903
dx = [1, 0, -1, 0];	dy = [0, 1, 0, -1]


"""
Main Code
"""

h, w = getNs()
a = [getList() for _ in [0] * h]

dp = [[[0] * 2 for _ in [0] * w] for _ in [0] * h]
que = [(0, 0, a[0][0], 0)]
while(que):
	x, y, t, c = que.pop()
	dp[x][y][c] = t
	for nx, ny in ((x + 1, y), (x, y + 1)):
		if not(0 <= nx < h and 0 <= ny < w):
			continue
		if(t > a[nx][ny] and t + a[nx][ny] > dp[nx][ny][c]):
			que.append((nx, ny, t + a[nx][ny], c))
		elif(c == 0 and (nx != h - 1 or ny != w - 1) and t > dp[nx][ny][1]):
			que.append((nx, ny, t, 1))

if(dp[h - 1][w - 1][0] + dp[h - 1][w - 1][1] > 0):
	yexit()
nexit()