n,num=map(int,input().split()) a=[] for x in range(n): b=list(map(int,input().split())) a.append(b) for i in range(n): for j in range(n): if i==j or i+j==n-1: a[i][j]=a[i][j]=num for row in a: for ele in row: print(str(ele).rjust(5),end="") print()