Data_Structure/作業/unit12/up_2.dat

0 1 1 0 0 0 0 0 0 0
  0 0 1 1 0 0 0 0 0
    0 0 0 1 1 0 0 0
      0 0 0 0 1 0 0
        0 0 0 1 0 0
          0 0 0 1 0
            0 0 1 0
              0 0 1
                0 1
                  0