H,W = map(int,input().split())

import sys
if H == 1 or W == 1:
    print(0)
    for h in range(H):
        for w in range(W):
            print(0,end = " ")
        print()
    exit()
ans = [[0] * W for _ in range(H)]
A = ans
if W % 2 == 1:
    wend = W - 1
else:
    wend = W
if H % 2 == 1:
    hend = H - 1
else:
    hend = H

for h in range(hend):
    for w in range(wend):
        A[h][w] = 1
t = wend * hend
if H % 2 == 1 and W % 2 == 1:
    for h in range(hend - 1,hend + 1):
        for w in range(wend - 1,wend + 1):
            A[h][w] ^= 1
    t += 2
print(t)
for h in range(H):
    print(*A[h])