s=input()
n=1024
print(n)
X=[]
for i in range(n):
    X.append(["#"]*n)


for i in range(n):
    for j in range(n):
        if i==1 or i==n-1 or j==0 or j==n-1:
            X[i][j]="."
k=500
for i in range(k):
    h=(k-i)*2
    X[n-1-h][2*i+1]="."
    for j in range(h+1):
        X[n-1-j][2*i+2]="."
for i in range(k):
    h=(k-i)*2
    X[2*i+2][n-1-h]="."
    for j in range(h+1):
        X[2*i+3][n-1-j]="."   

for i in range(len(s)):
    if s[i]=="x":
        if i%2==0:
            X[-2][i]="#"
        else:
            X[i][-2]="#"

for I in X:print("".join(I))