replace edge with maximum value

r,c=map(int,input().split())

l=[list(map(int,input().split())) for i in range(r)]

p=max(l[0][1:-1])

pp=max(l[-1][1:-1])

for i in range(1,c-1):

    l[0][i]=p

    l[-1][i]=pp

pre1=-1

for i in range(1,r-1):

    if l[i][0]>pre1:

        pre1=l[i][0]

pre2=-1

for i in range(1,r-1):

    if l[i][-1]>pre2:

        pre2=l[i][-1]

for i in range(1,r-1):

    l[i][0]=pre1

    l[i][-1]=pre2

for i in l:

    print(*i)