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 | | x = [ |  |     [1.3, 5.6, 7.8], |  |     [2.4, 1.8, 6.9], |  |     [3.5, 1.7, 6.3] |  | ] |  |   |  | y = [ |  |     [0.2, 3.4, -9.4], |  |     [1.6, 7.8, 8.4], |  |     [3.5, 6.8, 7.9] |  | ] |  |   |  | s = [] |  | row_size = len(x) |  | for i in range(0, row_size): |  |     row = [] |  |     col_size = len(x[i]) |  |     for j in range(0, col_size): |  |         row.append( x[i][j] + y[i][j] ) |  |     s.append(row) |  |   |  | print(s) |  |   |  | h = [] |  | col_idx = 1 |  | for i in range(0, row_size): |  |     row = [ y[i][col_idx] ] |  |     h.append(row) |  |   |  | print(h) | 
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