дм5

a,b = map(int,input().split())
A = [[int(j) for j in input().split()] for i in range(a)]
l,m = map(int,input().split())
for i in range(a):
    s = A[i][l]
    A[i][l] = A[i][m]
    A[i][m] = s
print(A)