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)