MOD = 10 ** 18 + 3
N, U = map(int, input().split())
H, W = map(int, input().split())
HW = H * W

p2 = [0] * HW
p2[0] = 1
for i in range(1, HW):
	p2[i] = p2[i - 1] * 2
	if p2[i] >= MOD:
		p2[i] -= MOD

S = [[] for i in range(N)]
d, ds = dict(), dict()
for x in range(N):
	F = int(input())
	for i in range(H):
		S[x] += list(input())
	
	h = 0
	for i in range(HW):
		if S[x][i] == '#':
			h += p2[i]
			if h >= MOD:
				h -= MOD
	
	if h not in d:
		d[h] = 0
		ds[h] = (x, -1)
	d[h] += (1 if x < U else -1)
	
	if F == 1:
		for i in range(HW):
			hi = h + (-1 if S[x][i] == '#' else 1) * p2[i]
			if hi >= MOD:
				hi -= MOD
			if hi < 0:
				hi += MOD
			
			if hi not in d:
				d[hi] = 0
				ds[hi] = (x, i)
			d[hi] += (1 if x < U else -1)

val_max, h_max= -1000, -1
for i in range(1 << min(HW, 20)):
	if i not in d:
		val_max, h_max = 0, i
		break

for h, val in d.items():
	if val_max < val:
		val_max, h_max = val, h

print(val_max)
if h_max not in d:
	for i in range(H):
		print('#' if j < 20 and (h_max >> j) & 1 else '.' for j in range(i * W, (i + 1) * W))
else:
	x, p = ds[h_max]
	if p != -1:
		S[x][p] = ('#' if S[x][p] == '.' else '.')
	for i in range(H):
		print("".join(S[x][i * W : (i + 1) * W]))