X = [[4,3,9],
[1,2,0],
[5,1,4]]
Y = [[2,7,0],
[1,2,4],
[4,5,1]]
result = [[0,0,0],
[0,0,0],
[0,0,0]]
# iterate through rows
for i in range(len(X)):
# iterate through columns
for j in range(len(X[0])):
result[i][j] = X[i][j] + Y[i][j]
for r in result:
print(r)