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
if H % 2 == 0 or W % 2 == 0:
    for h in range(hend):
        for w in range(wend):
            A[h][w] = 1
    print(hend * wend)
    for h in range(H):
        print(*A[h])
    exit()
else:
    for h in range(H):
        for w in range(W):
            A[h][w] = 1
    m = min(H,W)
    for i in range(m):
        A[i][i] = 0
    if W > m:
        for i in range(m,W):
            A[0][i] = 0
    if H > m:
        for i in range(m,H):
            A[i][0] = 0
    print(H * W - max(H,W))
    for h in range(H):
        print(*A[h])