  3   16  24        
  
2022/3/17

      3  16  0  24               4           10          4    2     3    1  

      3  16  24               24     9    6     5    2    2         6     5    1           1                             

      2  15                475     427    25     15    3   3    2        451     418    19     10    3   1  

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