h,w = map(int,input().split())
ans =[[0 for i in range(w)] for j in range(h)]
c1 = 0
c2 = 0
for i in range(h):
    for j in range(w):
        if (i+j)%2 == 0:
            c1 += 1
            ans[i][j] = c1
        else:
            c2 += 1
            ans[i][j] = h*w+1-c2

print("Yes")
for a in ans:
    print(*a)