import sys
input = sys.stdin.readline


H,W=map(int,input().split())
A=[list(map(int,input().split())) for _ in range(H)]
INF=float("inf")
dp = [[0]*W for _ in range(H)]
dp2 = [[0]*W for _ in range(H)]
dp[0][0]=A[0][0]
for h in range(H):
    for w in range(W):
        if h==0 and w==0: continue
        if h==0:
            dp[h][w]=dp[h][w-1]
        elif w==0:
            dp[h][w]=dp[h-1][w]
        else:
            dp[h][w]=max(dp[h-1][w],dp[h][w-1])
        if dp[h][w] > A[h][w]:
            dp[h][w]+=A[h][w]
        else:
            if h<H-1:
                dp2[h+1][w]=max(dp2[h+1][w], dp[h][w])
            if w<W-1:
                dp2[h][w+1]=max(dp2[h][w+1], dp[h][w])
            dp[h][w]=0
for h in range(H):
    for w in range(W):
        if h==0 and w==0: continue
        if h==0:
            dp2[h][w]=max(dp2[h][w],dp2[h][w-1])
        elif w==0:
            dp2[h][w]=max(dp2[h][w],dp2[h-1][w])
        else:
            dp2[h][w]=max(dp2[h][w],dp2[h-1][w],dp2[h][w-1])
        if dp2[h][w] > A[h][w]:
            dp2[h][w]+=A[h][w]
        else:
            dp2[h][w]=0
print("Yes" if dp[-1][-1]>0 or dp2[-1][-1]>0 else "No")