m,n=list(map(int,input().split())) a=[] for i in range(m): tmp=list(map(int,input().split())) a.append(tmp) for x in range(m): a[m-1][x],a[n-1][x]=a[n-1][x],a[m-1][x] for i in range(m): for j in range(m): print(a[i][j],end=" ") print()