H,W = list(map(int,input().split()))
field = [[0 for _ in range(W)] for _ in range(H)]
ans = 0
for i in range(H-1):
    for j in range(W-1):
        if(field[i][j] == field[i+1][j] == field[i][j+1] == field[i+1][j+1] == 0):
            field[i][j] = 1
            field[i][j+1] = 1
            field[i+1][j] = 1
            field[i+1][j+1] = 1
            ans += 4

print(ans)
for i in field:
    print(*i)