Problem X: 递减对称数字塔

Problem X: 递减对称数字塔

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Time Limit : 1.000 sec  Memory Limit : 128 MiB

SubmitProblemListSolved: 1Submit Num: 1StatisticsShowOff!

Description

Sample Input Copy 

5

Sample Output Copy 

        5
      4 5 4
    3 4 5 4 3
  2 3 4 5 4 3 2
1 2 3 4 5 4 3 2 1
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