def main():
  for i in range(V):
      S=str()
      for j in range(V):
          if i==0:
              S+="1"
          else:
              if j==0:
                  S+="1"
              else:
                  S+="0"
      print(S)
V,D=map(int,input().split())
if D!=1:
  main()
  exit()
else:
  for i in range(V):
    print("1"*V)