import numpy as np
n,m,p=(map(int,input().split()))
l1=[]
l2=[]
for i in range(n):
  (l1.append(list(map(int, input().split()))))
for j in range(m):
  (l2.append(list(map(int, input().split()))))
ar1=np.array(l1)
ar2=np.array(l2)
con=np.concatenate((ar1,ar2), axis=0)
print(con)